Trigger perf tests by default after release

[ThumulaPerera]

Purpose

$subject

Related Issues

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Related PRs

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Checklist

• Followed the contribution guidelines.
• Manual test round performed and verified.
• Documentation provided. (Add links if there are any)
• Tests provided. (Add links if there are any)
  • Unit Tests
  • Integration Tests
• Breaking changes. (Fill if applicable)
  • Breaking changes section filled.
  • breaking change label added.

Security checks

• Followed secure coding standards in WSO2 Secure Coding Guidelines
• Confirmed that this PR doesn't commit any keys, passwords, tokens, usernames, or other secrets.

[Copilot]

Pull request overview

This PR changes the default behavior of the release builder workflow to run performance tests by default after each release, rather than requiring manual opt-in.

Changes:

• Updated the default value for run_performance_test workflow input from false to true
• Updated the hardcoded performance test flag for scheduled/no-version runs from false to true

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.93%. Comparing base (122b937) to head (740e620).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1292      +/-   ##
==========================================
- Coverage   89.94%   89.93%   -0.01%     
==========================================
  Files         625      625              
  Lines       40648    40648              
  Branches     2371     2371              
==========================================
- Hits        36559    36555       -4     
- Misses       2212     2216       +4     
  Partials     1877     1877              

Flag	Coverage Δ
backend-integration-postgres	52.90% <ø> (ø)
backend-integration-sqlite	52.87% <ø> (ø)
backend-unit	82.66% <ø> (-0.02%)	⬇️
frontend-apps-develop-unit	90.75% <ø> (ø)
frontend-apps-gate-unit	84.62% <ø> (ø)

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