(chore): upgrade material ui

[ilan-gold]

Background

For #745 (comment)

Change List

• Upgrade Material UI to 6.x.x

Checklist

• Update JSdoc types if there is any API change.
• Make sure Avivator works as expected with your change.

[ilan-gold]

Before:

After:

I will try to figure out if the un-whitened buttons are a bug or a feature but anyone is welcome to chime in. It could be a good design principle, really unsure.

[ilan-gold]

@manzt You can review the code (although large swaths of it are from the codemods they made available), but I would be probably more interested in a user-test to help to sniff out bugs if they were introduced.

[manzt]

thanks for making the pr! i won’t have time to review these changes until after my defense unfortunately

[ilan-gold]

Ah ok @manzt I may just try to be extra careful and then merge-as-is if I don't find anything.