Add concurrent test support

[Thevakumar-Luheerathan]

Purpose

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Fixes #24643

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

Attention: Patch coverage is 85.71429% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 76.71%. Comparing base (b5c6a95) to head (37f2a74).
Report is 16 commits behind head on master.

Files	Patch %	Lines
...erina/runtime/internal/testable/TestArguments.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             master   #40279       +/-   ##
=============================================
+ Coverage      0.00%   76.71%   +76.71%     
- Complexity        0    53073    +53073     
=============================================
  Files             9     2884     +2875     
  Lines            35   200028   +199993     
  Branches          0    26041    +26041     
=============================================
+ Hits              0   153458   +153458     
- Misses           35    38127    +38092     
- Partials          0     8443     +8443     

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[github-actions]

This PR has been open for more than 15 days with no activity. This will be closed in 3 days unless the stale label is removed or commented.