feat: Notify application when a self-ISS event is detected by the platform

[timfn-hg]

Description:
When a self or catastrophic ISS event is detected by the platform, forward the event to the application for additional handling. This PR creates a new ISS listener called AsyncFatalIssListener that compliments the existing IssListener. The new listener was created such that the event could be forwarded asynchronously, as opposed to synchronously with the original IssListener. If this async nature is not really wanted, then we can fall back to using the original IssListener (I think).

Currently, the handler that receives the notification doesn't do anything meaningful, but follow up work will expand its use.

Related issue(s):

Fixes #17266

Notes for reviewer:
I've updated the platform tests to ensure the notification is forwarded in the case of ISS events, but I am not familiar with how to test the full path between the platform and app layer to ensure the notification is being received (i.e. making sure the app pieces are set up correctly). If anyone can point me to how to do this, that would be great.

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.11% (target: -1.00%)	✅ 66.67%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (66ebd29)	96103	68321	71.09%
Head commit (ef275a5)	96093 (-10)	68421 (+100)	71.20% (+0.11%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#17274)	9	6	66.67%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 3 lines in your changes missing coverage. Please review.

Project coverage is 67.34%. Comparing base (66ebd29) to head (ef275a5).
Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
...node/app/state/listeners/FatalIssListenerImpl.java	60.00%	2 Missing ⚠️
...-app/src/main/java/com/hedera/node/app/Hedera.java	50.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #17274      +/-   ##
============================================
+ Coverage     67.23%   67.34%   +0.10%     
- Complexity    21988    22021      +33     
============================================
  Files          2583     2584       +1     
  Lines         96320    96310      -10     
  Branches      10058    10054       -4     
============================================
+ Hits          64764    64860      +96     
+ Misses        27847    27741     -106     
  Partials       3709     3709              

Files with missing lines	Coverage Δ
...a/com/hedera/node/app/platform/PlatformModule.java	100.00% <ø> (ø)
...lds/platform/builder/PlatformComponentBuilder.java	36.13% <ø> (ø)
...wirlds/platform/components/DefaultAppNotifier.java	100.00% <100.00%> (+100.00%)	⬆️
...-app/src/main/java/com/hedera/node/app/Hedera.java	52.27% <50.00%> (-0.02%)	⬇️
...node/app/state/listeners/FatalIssListenerImpl.java	60.00% <60.00%> (ø)

... and 26 files with indirect coverage changes

[anthony-swirldslabs]

LGTM. Thanks!

[Neeharika-Sompalli]

LGTM from services changes. Just had one comment. Thanks @timfn-hg!

Also, to test this you could simulate submitting self-ISS event locally in platform code and run node using ./gradlew run, submit some transactions. You should be able to see the warn log in hgcaa.log.