shell in step/defaults cannot use job/matrix templates

[jacekkow]

shell parameter in steps context should allow ${{ job/steps. }} variables. I can see no reason for disallowing such expressions there.

To Reproduce

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
       - run: no matter what
         shell: echo ${{ job.status }}

https://github.com/jacekkow/github-actions-bugs/blob/master/.github/workflows/bug1.yml

Expected behavior Step returns:

Success

Runner Version and Platform

GitHub Actions

What's not working?

The workflow fails:

The workflow is not valid. .github/workflows/bug1.yml (Line: 9, Col: 17): Unrecognized named-value: 'job'. Located at position 1 within expression: job.status

As far as I can tell this is due to non-empty-string being used instead of string-steps-context (or perhaps new non-empty-string-steps-context?) here: https://github.com/actions/runner/blob/3d70ef2da1798bb22fde31ceef8b9ea8cc328adb/src/Sdk/DTPipelines/workflow-v1.0.json#L403

Similar change should also be made here: https://github.com/actions/runner/blob/3d70ef2da1798bb22fde31ceef8b9ea8cc328adb/src/Sdk/DTPipelines/workflow-v1.0.json#L422