Sometimes Pull Request don't get the Azure Pipeline coverage result

Please try to fix by the following:

1. Ensure Jest outputs Cobertura format: In jest.config.js:

coverageReporters: ['text', 'clover', 'cobertura']

This generates cobertura-coverage.xml which Azure understands.

2. Update your pipeline YAML:

- task: PublishCodeCoverageResults@1
  inputs:
    codeCoverageTool: Cobertura
    summaryFileLocation: '$(System.DefaultWorkingDirectory)/coverage/cobertura-coverage.xml'
  condition: succeededOrFailed()

3. Add a delay or dependency between test and publish steps to ensure coverage files are ready.

4. Use PublishTestResults@2 for test output (e.g. junit.xml) to improve PR feedback:

- task: PublishTestResults@2
  inputs:
    testResultsFiles: '**/junit.xml'
  condition: succeededOrFailed()

5. Double-check PR triggers: Make sure your pipeline is configured to run on PRs and that the coverage task is part of that trigger.