Fix docset generation. (#67025)

* Fix docset generation.

* Remove checks to be able to test.

* More logging

* More logging

* More logging.

* more logging.

* More logging.

* Add flags to firebase command.

* Re-enable docset generation.

* Disable firebase step.

* Comment docset to speed up validations.

* Re-enable docset.

* Add back condition to prevent uploading docs from PRs.