Mark platform as any for testOnly platform libs

[ShammiL]

Purpose

$Subject

Fixes #40852

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

[codecov]

Codecov Report

Patch coverage: 89.87% and project coverage change: -0.02% ⚠️

Comparison is base (e7f7f2c) 76.45% compared to head (1748cb7) 76.43%.
Report is 57 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #41033      +/-   ##
============================================
- Coverage     76.45%   76.43%   -0.02%     
- Complexity    52154    52214      +60     
============================================
  Files          2856     2857       +1     
  Lines        196001   196184     +183     
  Branches      25416    25451      +35     
============================================
+ Hits         149843   149948     +105     
- Misses        37857    37920      +63     
- Partials       8301     8316      +15     

Files Changed	Coverage Δ
.../langserver/common/constants/CommandConstants.java	90.00% <ø> (ø)
...va/io/ballerina/projects/JBallerinaBalaWriter.java	84.68% <36.36%> (-4.64%)	⬇️
...rs/imports/AddModuleToBallerinaTomlCodeAction.java	80.00% <80.00%> (ø)
.../compiler/semantics/analyzer/DataflowAnalyzer.java	89.96% <97.18%> (+0.45%)	⬆️
...ava/io/ballerina/runtime/internal/TypeChecker.java	80.98% <100.00%> (+0.04%)	⬆️
...g/wso2/ballerinalang/compiler/desugar/Desugar.java	89.33% <100.00%> (-0.97%)	⬇️
.../compiler/semantics/analyzer/QueryTypeChecker.java	89.25% <100.00%> (+0.04%)	⬆️
.../compiler/semantics/analyzer/SemanticAnalyzer.java	90.61% <100.00%> (-0.01%)	⬇️
...alang/compiler/semantics/analyzer/TypeChecker.java	91.68% <100.00%> (-0.08%)	⬇️
...llerinalang/compiler/semantics/analyzer/Types.java	81.76% <100.00%> (-0.01%)	⬇️

... and 7 files with indirect coverage changes

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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.