Fix CI failing on main

[A5rocks]

@webknjaz both issues you pointed out

I'm pretty sure this should fix both reasons for failing CI on main.

---

I'm also seeing this in the logs:

  =========== 857 passed, 34 skipped, 3 xfailed in 103.89s (0:01:43) ============
  C:\hostedtoolcache\windows\Python\3.14.1\x64-freethreaded\Lib\site-packages\coverage\inorout.py:521: CoverageWarning: Module tests/ was never imported. (module-not-imported); see https://coverage.readthedocs.io/en/7.12.0/messages.html#warning-module-not-imported
    self.warn(f"Module {pkg} was never imported.", slug="module-not-imported")

but not sure how to address that :/

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00000%. Comparing base (7d87afe) to head (7d9ba6d).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@                 Coverage Diff                  @@
##                main        #3365         +/-   ##
====================================================
+ Coverage   97.88392%   100.00000%   +2.11607%     
====================================================
  Files            128          128                 
  Lines          19848        19407        -441     
  Branches        1387         1318         -69     
====================================================
- Hits           19428        19407         -21     
+ Misses           412            0        -412     
+ Partials           8            0          -8     

Files with missing lines	Coverage Δ
src/trio/_core/_tests/test_run.py	100.00000% <ø> (+1.96850%)	⬆️
src/trio/_tests/test_exports.py	100.00000% <ø> (+22.18309%)	⬆️

... and 54 files with indirect coverage changes

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[A5rocks]

Windows 3.14t x64 failed in test_run_in_trio_thread_ki (?) weirdly -- it didn't crash, pytest just suddenly exited. I don't think it's reproducible, but leaving this here for future search to find.

[webknjaz]

I'm also seeing this in the logs:\n\n =========== 857 passed, 34 skipped, 3 xfailed in 103.89s (0:01:43) ============\n C:\hostedtoolcache\windows\Python\3.14.1\x64-freethreaded\Lib\site-packages\coverage\inorout.py:521: CoverageWarning: Module tests/ was never imported. (module-not-imported); see https://coverage.readthedocs.io/en/7.12.0/messages.html#warning-module-not-imported\n self.warn(f"Module {pkg} was never imported.", slug="module-not-imported")\nbut not sure how to address that :/

That seems related to the use of source and not source_pkgs like I mentioned in the other PR. Perhaps, I should look into it myself.