Add comment explaining both FT and FD values on applicable chains

core/chains/evm/config/toml/defaults/Celo_Mainnet.toml

@@ -1,5 +1,8 @@
 ChainID = '42220'
 ChainType = 'celo'
+# FT and FD are both present here because the dev effort rely only on FinalityTagEnabled are still in progress.
+# We expect to be able to rely only on FinalityTagEnabled=true in the short future.
+# https://chainlink-core.slack.com/archives/C05CS33N08N/p1715102940763339?thread_ts=1715102478.537529&cid=C05CS33N08N
 FinalityDepth = 10
 FinalityTagEnabled = true
 LogPollInterval = '5s'

core/chains/evm/config/toml/defaults/Celo_Testnet.toml

@@ -1,5 +1,8 @@
 ChainID = '44787'
 ChainType = 'celo'
+# FT and FD are both present here because the dev effort rely only on FinalityTagEnabled are still in progress.
+# We expect to be able to rely only on FinalityTagEnabled=true in the short future.
+# https://chainlink-core.slack.com/archives/C05CS33N08N/p1715102940763339?thread_ts=1715102478.537529&cid=C05CS33N08N
 FinalityDepth = 10
 FinalityTagEnabled = true
 LogPollInterval = '5s'

core/chains/evm/config/toml/defaults/Kroma_Mainnet.toml

@@ -1,5 +1,8 @@
 ChainID = '255'
 ChainType = 'kroma' # Kroma is based on the Optimism Bedrock architechture
+# FT and FD are both present here because the dev effort rely only on FinalityTagEnabled are still in progress.
+# We expect to be able to rely only on FinalityTagEnabled=true in the short future.
+# https://chainlink-core.slack.com/archives/C05CS33N08N/p1715102940763339?thread_ts=1715102478.537529&cid=C05CS33N08N
 FinalityDepth = 700
 FinalityTagEnabled = true
 LogPollInterval = '2s'

core/chains/evm/config/toml/defaults/Kroma_Sepolia.toml

@@ -1,5 +1,8 @@
 ChainID = '2358'
 ChainType = 'kroma' # Kroma is based on the Optimism Bedrock architechture
+# FT and FD are both present here because the dev effort rely only on FinalityTagEnabled are still in progress.
+# We expect to be able to rely only on FinalityTagEnabled=true in the short future.
+# https://chainlink-core.slack.com/archives/C05CS33N08N/p1715102940763339?thread_ts=1715102478.537529&cid=C05CS33N08N
 FinalityDepth = 700
 FinalityTagEnabled = true
 LogPollInterval = '2s'

core/chains/evm/config/toml/defaults/Mantle_Sepolia.toml

@@ -1,5 +1,8 @@
 ChainID = '5003'
 ChainType = 'optimismBedrock'
+# FT and FD are both present here because the dev effort rely only on FinalityTagEnabled are still in progress.
+# We expect to be able to rely only on FinalityTagEnabled=true in the short future.
+# https://chainlink-core.slack.com/archives/C05CS33N08N/p1715102940763339?thread_ts=1715102478.537529&cid=C05CS33N08N
 FinalityDepth = 1200
 FinalityTagEnabled = true
 LogPollInterval = '2s'

core/chains/evm/config/toml/defaults/Metis_Mainnet.toml

@@ -6,6 +6,9 @@ ChainType = 'optimismBedrock'
 # and set 500 as a secure finality depth.
 # https://chainlink-core.slack.com/archives/C0725LNLJLA/p1717118469587219
 FinalityDepth = 500
+# FT and FD are both present here because the dev effort rely only on FinalityTagEnabled are still in progress.
+# We expect to be able to rely only on FinalityTagEnabled=true in the short future.
+# https://chainlink-core.slack.com/archives/C05CS33N08N/p1715102940763339?thread_ts=1715102478.537529&cid=C05CS33N08N
 FinalityTagEnabled = true
 MinIncomingConfirmations = 1
 NoNewHeadsThreshold = '0'

core/chains/evm/config/toml/defaults/Metis_Sepolia.toml

@@ -1,6 +1,9 @@
 ChainID = '59902'
-FinalityDepth = 3000
 ChainType = 'optimismBedrock'
+# FT and FD are both present here because the dev effort rely only on FinalityTagEnabled are still in progress.
+# We expect to be able to rely only on FinalityTagEnabled=true in the short future.
+# https://chainlink-core.slack.com/archives/C05CS33N08N/p1715102940763339?thread_ts=1715102478.537529&cid=C05CS33N08N
+FinalityDepth = 3000
 FinalityTagEnabled = true
 MinIncomingConfirmations = 1
 NoNewHeadsThreshold = '0'

docs/CONFIG.md

@@ -4019,6 +4019,212 @@ GasLimitDefault = 400000
 
 </p></details>
 
+<details><summary>Hedera Mainnet (295)</summary><p>
+
+```toml
+AutoCreateKey = true
+BlockBackfillDepth = 10
+BlockBackfillSkip = false
+ChainType = 'hedera'
+FinalityDepth = 10
+FinalityTagEnabled = false
+LogBackfillBatchSize = 1000
+LogPollInterval = '10s'
+LogKeepBlocksDepth = 100000
+LogPrunePageSize = 10000
+BackupLogPollerBlockDelay = 100
+MinIncomingConfirmations = 1
+MinContractPayment = '0.00001 link'
+NonceAutoSync = true
+NoNewHeadsThreshold = '3m0s'
+LogBroadcasterEnabled = true
+RPCDefaultBatchSize = 250
+RPCBlockQueryDelay = 1
+FinalizedBlockOffset = 0
+NoNewFinalizedHeadsThreshold = '0s'
+
+[Transactions]
+ForwardersEnabled = false
+MaxInFlight = 16
+MaxQueued = 250
+ReaperInterval = '1h0m0s'
+ReaperThreshold = '168h0m0s'
+ResendAfterThreshold = '2m0s'
+
+[Transactions.AutoPurge]
+Enabled = false
+
+[BalanceMonitor]
+Enabled = true
+
+[GasEstimator]
+Mode = 'SuggestedPrice'
+PriceDefault = '20 gwei'
+PriceMax = '115792089237316195423570985008687907853269984665.640564039457584007913129639935 tether'
+PriceMin = '1 gwei'
+LimitDefault = 8000000
+LimitMax = 8000000
+LimitMultiplier = '1'
+LimitTransfer = 21000
+EstimateLimit = false
+BumpMin = '10 gwei'
+BumpPercent = 20
+BumpThreshold = 0
+EIP1559DynamicFees = false
+FeeCapDefault = '100 gwei'
+TipCapDefault = '1 wei'
+TipCapMin = '1 wei'
+
+[GasEstimator.BlockHistory]
+BatchSize = 25
+BlockHistorySize = 8
+CheckInclusionBlocks = 12
+CheckInclusionPercentile = 90
+TransactionPercentile = 60
+
+[GasEstimator.FeeHistory]
+CacheTimeout = '10s'
+
+[HeadTracker]
+HistoryDepth = 100
+MaxBufferSize = 3
+SamplingInterval = '1s'
+MaxAllowedFinalityDepth = 10000
+FinalityTagBypass = true
+
+[NodePool]
+PollFailureThreshold = 5
+PollInterval = '10s'
+SelectionMode = 'HighestHead'
+SyncThreshold = 10
+LeaseDuration = '0s'
+NodeIsSyncingEnabled = false
+FinalizedBlockPollInterval = '5s'
+EnforceRepeatableRead = false
+DeathDeclarationDelay = '10s'
+NewHeadsPollInterval = '0s'
+
+[OCR]
+ContractConfirmations = 4
+ContractTransmitterTransmitTimeout = '10s'
+DatabaseTimeout = '10s'
+DeltaCOverride = '168h0m0s'
+DeltaCJitterOverride = '1h0m0s'
+ObservationGracePeriod = '1s'
+
+[OCR2]
+[OCR2.Automation]
+GasLimit = 5400000
+
+[Workflow]
+GasLimitDefault = 400000
+```
+
+</p></details>
+
+<details><summary>Hedera Testnet (296)</summary><p>
+
+```toml
+AutoCreateKey = true
+BlockBackfillDepth = 10
+BlockBackfillSkip = false
+ChainType = 'hedera'
+FinalityDepth = 10
+FinalityTagEnabled = false
+LogBackfillBatchSize = 1000
+LogPollInterval = '10s'
+LogKeepBlocksDepth = 100000
+LogPrunePageSize = 10000
+BackupLogPollerBlockDelay = 100
+MinIncomingConfirmations = 1
+MinContractPayment = '0.00001 link'
+NonceAutoSync = true
+NoNewHeadsThreshold = '3m0s'
+LogBroadcasterEnabled = true
+RPCDefaultBatchSize = 250
+RPCBlockQueryDelay = 1
+FinalizedBlockOffset = 0
+NoNewFinalizedHeadsThreshold = '0s'
+
+[Transactions]
+ForwardersEnabled = false
+MaxInFlight = 16
+MaxQueued = 250
+ReaperInterval = '1h0m0s'
+ReaperThreshold = '168h0m0s'
+ResendAfterThreshold = '2m0s'
+
+[Transactions.AutoPurge]
+Enabled = false
+
+[BalanceMonitor]
+Enabled = true
+
+[GasEstimator]
+Mode = 'SuggestedPrice'
+PriceDefault = '20 gwei'
+PriceMax = '115792089237316195423570985008687907853269984665.640564039457584007913129639935 tether'
+PriceMin = '1 gwei'
+LimitDefault = 8000000
+LimitMax = 8000000
+LimitMultiplier = '1'
+LimitTransfer = 21000
+EstimateLimit = false
+BumpMin = '10 gwei'
+BumpPercent = 20
+BumpThreshold = 0
+EIP1559DynamicFees = false
+FeeCapDefault = '100 gwei'
+TipCapDefault = '1 wei'
+TipCapMin = '1 wei'
+
+[GasEstimator.BlockHistory]
+BatchSize = 25
+BlockHistorySize = 8
+CheckInclusionBlocks = 12
+CheckInclusionPercentile = 90
+TransactionPercentile = 60
+
+[GasEstimator.FeeHistory]
+CacheTimeout = '10s'
+
+[HeadTracker]
+HistoryDepth = 100
+MaxBufferSize = 3
+SamplingInterval = '1s'
+MaxAllowedFinalityDepth = 10000
+FinalityTagBypass = true
+
+[NodePool]
+PollFailureThreshold = 5
+PollInterval = '10s'
+SelectionMode = 'HighestHead'
+SyncThreshold = 10
+LeaseDuration = '0s'
+NodeIsSyncingEnabled = false
+FinalizedBlockPollInterval = '5s'
+EnforceRepeatableRead = false
+DeathDeclarationDelay = '10s'
+NewHeadsPollInterval = '0s'
+
+[OCR]
+ContractConfirmations = 4
+ContractTransmitterTransmitTimeout = '10s'
+DatabaseTimeout = '10s'
+DeltaCOverride = '168h0m0s'
+DeltaCJitterOverride = '1h0m0s'
+ObservationGracePeriod = '1s'
+
+[OCR2]
+[OCR2.Automation]
+GasLimit = 5400000
+
+[Workflow]
+GasLimitDefault = 400000
+```
+
+</p></details>
+
 <details><summary>zkSync Sepolia (300)</summary><p>
 
 ```toml