Fix NoSuchFieldError for escaped identifiers during bal test

[gabilang]

Purpose

$title

Fixes #42693

Approach

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Samples

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Remarks

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Check List

• Read the Contributing Guide
• Updated Change Log
• Checked Tooling Support (#)
• Added necessary tests
  • Unit Tests
  • Spec Conformance Tests
  • Integration Tests
  • Ballerina By Example Tests
• Increased Test Coverage
• Added necessary documentation
  • API documentation
  • Module documentation in Module.md files
  • Ballerina By Examples

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.19%. Comparing base (dca7201) to head (242f192).
Report is 87 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #42709      +/-   ##
============================================
+ Coverage     77.13%   77.19%   +0.06%     
- Complexity    51182    51290     +108     
============================================
  Files          2924     2929       +5     
  Lines        203973   204410     +437     
  Branches      26604    26666      +62     
============================================
+ Hits         157338   157798     +460     
+ Misses        38122    38051      -71     
- Partials       8513     8561      +48     

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