fix(ci): ensure codecov runs for internal PRs targeting main

[JkrishnaD]

This Pull Request fixes/closes #4179.

It changes the following:

• The coverage job was not running for pull requests created from branches within the same repository due to the previous condition:

if: ${{ github.ref == 'refs/heads/main' || github.base_ref == 'main' }}

• So, now to ensure that this to work for every pr we need to change this to

 if: ${{ github.ref == 'refs/heads/main' || github.event_name = 'pull_request' }}

• This updates the condition to ensure the coverage job runs for all pull_request events as well as pushes to main, so Codecov comments are posted consistently for both internal and fork PRs.

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	52,862	52,862	0
Passed	49,506	49,506	0
Ignored	2,261	2,261	0
Failed	1,095	1,095	0
Panics	0	0	0
Conformance	93.65%	93.65%	0.00%

Tested PR commit: b5a97fd31b2cd9e929a631a326a25abae5be340b

[zhuzhu81998]

not sure if this actually fixes the issue. it is not that the coverage workflow does not run for internal PRs. according to #4178, it does run, it simply does not comment.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 57.35%. Comparing base (6ddc2b4) to head (b5a97fd).
⚠️ Report is 723 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #4800       +/-   ##
===========================================
+ Coverage   47.24%   57.35%   +10.11%     
===========================================
  Files         476      554       +78     
  Lines       46892    60715    +13823     
===========================================
+ Hits        22154    34825    +12671     
- Misses      24738    25890     +1152     

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[JkrishnaD]

@zhuzhu81998 Thanks for pointing this out.

After investigating further, it looks like the original PR-comment issue is working fine. The remaining failure I observed is related to uploads on protected branches (main), which requires a CODECOV_TOKEN and is separate from the PR comment behavior.

Since this PR no longer addresses the root issue, I’m closing it and we can continue the discussion in the issue thread if needed.