The Dashing docs builds caused timeout issues as they exceeded 60 minutes. As a short-term workaround, we increased the timeouts to 90 minutes (#120718, #120899).

Long-term solutions:

1. Make Linux docs_test not generate the docset in post-submit. This is redundant with Linux docs_publish.
2. Additionally, consider...
   1. Contribute performance improvements to Dashing
   2. Determine if offline docset is needed. If not, remove Dashing from Linux docs_test and Linux docs_publish
   3. Move docs build to GitHub Actions (similar to the coverage build)
   4. Marking docs build targets as bringup

Related: #115945