[Maint] Use pyqt for CircleCI docs

[psobolewskiPhD]

Description

In CircleCI previews, the Gallery is broken. The errors appear to be related to pyside.
The regular artifact (.zip) is fine, but it's built using pyqt, so here I change CircleCI to also use pyqt as a possible fix.

Type of change

• Fixes or improves existing content
• Adds new content page(s)
• Fixes or improves workflow, documentation build or deployment

References

Final checklist:

• My PR is the minimum possible work for the desired functionality
• I have commented my code, particularly in hard-to-understand areas
• I have added alt text to new images included in this PR

[psobolewskiPhD]

Going to close, it's obviously a bit more tricky. Will re-think and try more local tests.