Update delete-dev-doc job to match build-dev-doc (#15891)
* Update delete-dev-doc job to match build-dev-doc
* More debug info
* More debug info
* Stash if needed
* Remove the comment update
* Fix paths
* Wtf is going on..
* Fix git status test
* Try another way
* I don't understand what's happening
* Bash shell
* What's happening now...
* What's happening now...
* Try like this
* Back to trying to use bash
* And like that?
* Refine tests
* Stash after adding new files
* Stash after adding new files
* Proper commit sha and PR number
* Address review comments
