Code Coverage fails to record most coverage when jobs execute on Job System worker threads

Steps to reproduce:

1. Open the attached “IN-152316” project
2. Open Window > Analysis > Code Coverage
3. If prompted to switch to Debug mode, accept
4. Enable Enable Code Coverage
5. Open Window > General > Test Runner
6. Click Run All
7. Open the generated report at <project>/CodeCoverage/Report/index.html
8. Observe the result

Actual result: Most coverage is not recorded unless CoverageWorkaround is enabled
Expected result: Coverage is recorded correctly without enabling CoverageWorkaround

Reproducible with: 1.3.0 (6000.6.0a3, 6000.0.83f1, 6000.3.23f1, 6000.5.11f1, 6000.6.0f1, 6000.7.0a6)
Not reproducible with: 1.3.0 (6000.6.0a2)

Reproducible on: Windows 11
Not reproducible on: No other environments tested

Note: CoverageWorkaround sets JobsUtility.JobWorkerCount = 0, forcing jobs to run on the main thread, where coverage is recorded correctly. This suggests coverage from Job System worker threads is not recorded properly