[2201.8.x] Fix CustomToolClassLoader linkage issue

[gayaldassanayake]

Purpose

8.x PR of #42055

Fixes #41957

Approach

Describe how you are implementing the solutions along with the design details.

Samples

Provide high-level details about the samples related to this feature.

Remarks

List any other known issues, related PRs, TODO items, or any other notes related to the PR.

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

[azinneera]

This can be improved as resolveClass(Objects.requireNonNull(loadedClass));

[gayaldassanayake]

Fixed with ecdf19e

[gayaldassanayake]

Needed for 8.5 release - https://github.com/ballerina-platform/ballerina-release/issues/2623

[codecov]

Codecov Report

Attention: 32 lines in your changes are missing coverage. Please review.

Comparison is base (3563e7b) 76.36% compared to head (ecdf19e) 76.35%.
Report is 6 commits behind head on 2201.8.x.

Files	Patch %	Lines
.../ballerina/cli/launcher/CustomToolClassLoader.java	0.00%	32 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff               @@
##             2201.8.x   #42056      +/-   ##
==============================================
- Coverage       76.36%   76.35%   -0.01%     
- Complexity      52568    52570       +2     
==============================================
  Files            2880     2880              
  Lines          198795   198823      +28     
  Branches        25829    25839      +10     
==============================================
+ Hits           151809   151819      +10     
- Misses          38631    38648      +17     
- Partials         8355     8356       +1     

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