Dependency gap between RTD build and Github Action

[henrydingliu]

As discussed in #974, there are subtle differences in dependency installation between the 'Doctest' portion of our unittest and the RTD build.

RTD sets up dependencies through

python -m pip install --upgrade --upgrade-strategy only-if-needed --no-cache-dir .[docs]

'Doctest' in our unittest sets up dependencies through

uv sync --extra docs

which occasionally introduces stale dependencies

[genedan]

Just leaving this here for myself or whoever decides to pick this up, looks like RTD supports uv:

https://docs.readthedocs.com/platform/stable/build-customization.html#install-dependencies-with-uv

[henrydingliu]

thanks for the guide. should be simple enough.

please point PR to experimental