Update to egui 0.35.0

[akx]

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• I have added a description of my changes and why I'd like them included in the section below

Description of Changes

Update to egui 0.35.0: https://github.com/emilk/egui/releases/tag/0.35.0

Related Issues

#276, kind of :)

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[akx]

Fixed the doctest issue, but I'm not sure what to do with cargo vet being unhappy.

I can just run cargo vet regenerate exemptions and cargo vet regenerate imports and then cargo vet check --locked passes, but that sounds like the wrong thing to just do.