Jupyter AI Settings theming is broken

[ellisonbg]

Testing the Jupyter AI 3.0.0a0 prerelease...

Description

The Jupyter AI settings panel doesn't use the Jupyter theme provider for MUI that themes the components using the JupyterLab theme. This can be seen by the larger sizes of the elements, and the fact that the components don't render properly in the dark theme.

In the light theme, the components are larger than expected:

In the dark theme, the components are not fully visible:

[MUFFANUJ]

Hello @ellisonbg @dlqqq, I would love to work on this issue can you please assign this to me.

[dlqqq]

Fixed by #1210. 🎉