Allow building full docs in PR, opt-in

[MatthewFlamm]

Overview

Allow adding a label to build full docs.

Details

This is opt-in from the perspective of the labelling. PR authors without label write permissions do not have the optionality.

[MatthewFlamm]

As of now, this PR will only work if the label pre-exists when a commit is pushed. I will push a dummy commit to test. To finish this, we should also run the doc build if when a PR is labeled with full-doc.

[codecov]

Codecov Report

Merging #3800 (55c4a29) into main (bda7d71) will not change coverage.
The diff coverage is n/a.

❗ Current head 55c4a29 differs from pull request most recent head a6c2b69. Consider uploading reports for the commit a6c2b69 to get more accurate results

@@           Coverage Diff           @@
##             main    #3800   +/-   ##
=======================================
  Coverage   94.15%   94.15%           
=======================================
  Files          86       86           
  Lines       18891    18891           
=======================================
  Hits        17787    17787           
  Misses       1104     1104           

[MatthewFlamm]

This doesn't work if any other labeled is added. It will still start the action but not run doc. This leads to the check not showing up in the PR. Unless we want to run this action everytime a label is added (I wouldn't recommend as we could be adding labels right before merging), I think we will have to push commits to get this label to work. It isn't a big hurdle IMO.

[MatthewFlamm]

Doc build fails as expected here, as I labeled it before pushing the last commit.