Revert partially constructed segments on-error in segment init function

[dagardner-nv]

Description

• Explicitly release edges from ingress/egress ports and manifolds.
• Ensure that the inner_edge held by the ForwardingEgressProvider is disconnected.
• Update ~EdgeHolder to LOG(FATAL) in debug mode, LOG(ERROR) otherwise. The thinking here is that this error is only of use to MRC developers and not of use to downstream users.

Closes #360

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[mdemoret-nv]

Need to see if there are any implementations of on_complete. If there arent, then we should just scrap the disconnector and remove the state and mutex changes.

[dagardner-nv]

I checked, the classes which implement on_complete are:

• mrc::node::NodeComponent Calls SourceProperties<OutputT>::release_edge_connection(); and do_on_complete which is unimpl in the base
• mrc::node::RouterBase calls MultiSourceProperties<KeyT, output_data_t>::release_edge_connections();

do_on_complete in turn is used by LambdaNodeComponent to call m_on_complete_fn if defined.

[codecov]

Codecov Report

Attention: Patch coverage is 72.82609% with 25 lines in your changes missing coverage. Please review.

Project coverage is 74.16%. Comparing base (bceb7ef) to head (6040afb).
Report is 7 commits behind head on branch-24.10.

Files with missing lines	Patch %	Lines
cpp/mrc/include/mrc/edge/edge_holder.hpp	25.00%	12 Missing ⚠️
...pp/mrc/src/internal/pipeline/pipeline_instance.cpp	78.94%	4 Missing ⚠️
cpp/mrc/include/mrc/manifold/egress.hpp	50.00%	2 Missing ⚠️
cpp/mrc/include/mrc/manifold/ingress.hpp	50.00%	2 Missing ⚠️
cpp/mrc/include/mrc/node/source_properties.hpp	93.33%	1 Missing ⚠️
cpp/mrc/include/mrc/segment/ingress_port.hpp	75.00%	1 Missing ⚠️
cpp/mrc/include/mrc/segment/object.hpp	0.00%	1 Missing ⚠️
cpp/mrc/include/mrc/segment/runnable.hpp	66.66%	1 Missing ⚠️
cpp/mrc/src/public/manifold/manifold.cpp	0.00%	1 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff                @@
##           branch-24.10     #434      +/-   ##
================================================
+ Coverage         74.07%   74.16%   +0.09%     
================================================
  Files               403      403              
  Lines             14401    14471      +70     
  Branches           1132     1137       +5     
================================================
+ Hits              10668    10733      +65     
- Misses             3733     3738       +5     

Flag	Coverage Δ
cpp	70.90% <70.65%> (+0.05%)	⬆️
py	42.83% <66.30%> (+1.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...pp/mrc/include/mrc/manifold/composite_manifold.hpp	88.88% <100.00%> (+2.22%)	⬆️
cpp/mrc/include/mrc/manifold/interface.hpp	100.00% <ø> (ø)
cpp/mrc/include/mrc/node/queue.hpp	100.00% <100.00%> (ø)
cpp/mrc/include/mrc/node/rx_node.hpp	93.47% <ø> (ø)
cpp/mrc/include/mrc/segment/component.hpp	100.00% <100.00%> (ø)
...pp/mrc/src/internal/segment/builder_definition.cpp	84.11% <100.00%> (+0.88%)	⬆️
cpp/mrc/src/internal/segment/segment_instance.cpp	84.12% <100.00%> (+0.52%)	⬆️
cpp/mrc/include/mrc/node/source_properties.hpp	77.55% <93.33%> (+2.55%)	⬆️
cpp/mrc/include/mrc/segment/ingress_port.hpp	77.27% <75.00%> (-0.51%)	⬇️
cpp/mrc/include/mrc/segment/object.hpp	50.96% <0.00%> (-0.50%)	⬇️
... and 6 more

... and 5 files with indirect coverage changes

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