Support loop element resolution during compensation

[somiljain2006]

• I have read the CONTRIBUTING.md guidelines.
• I have registered the PR changes.

Ⅰ. Describe what this PR did

Re-evaluate the loop collection expression during compensation and reconstruct the loop element using the restored loop index. This allows compensation tasks within loop states to access the corresponding loop element and index through the state machine context.

Ⅱ. Does this pull request fix one issue?

Fixes #6776

Ⅲ. Why don't you add test cases (unit test/integration test)?

Added unit tests covering compensation-time expression evaluation and loop element reconstruction.

Ⅳ. Describe how to verify it

1. Run LoopTaskHandlerInterceptorTest.
2. Run StateMachineDBTests.

Ⅴ. Special notes for reviews

N/A

[codecov]

Codecov Report

❌ Patch coverage is 90.47619% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 72.70%. Comparing base (2f3de1c) to head (e893b2d).

Files with missing lines	Patch %	Lines
...pcext/interceptors/LoopTaskHandlerInterceptor.java	90.47%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x    #8127      +/-   ##
============================================
- Coverage     72.92%   72.70%   -0.23%     
+ Complexity      883      879       -4     
============================================
  Files          1327     1327              
  Lines         50769    50781      +12     
  Branches       6058     6062       +4     
============================================
- Hits          37025    36919     -106     
- Misses        10735    10870     +135     
+ Partials       3009     2992      -17     

Files with missing lines	Coverage Δ
...pcext/interceptors/LoopTaskHandlerInterceptor.java	92.85% <90.47%> (+16.99%)	⬆️

... and 35 files with indirect coverage changes

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[somiljain2006]

@funky-eyes @slievrly Can you review this pr?