multichain testing improvements #38970

Job	Run time
pre_check / Check preconditions and cancel previous jobs	6s
deployment-test	32m 19s
getting-started (link-cli/yarn)	10m 53s
test-docker-build	50m 29s
getting-started (registry/yarn)	14m 20s
getting-started (registry/npm)	14m 34s
getting-started (registry/npx)	14m 26s
test-multichain-e2e / Multichain E2E (Orchestration API) / multichain-e2e	19m 32s
test-multichain-e2e / Multichain E2E (Fast USDC) / multichain-e2e	13m 36s
finalize-integration-result	6s
	2h 50m 21s

Provide feedback