Update egui with less wgpu lifetimes

[emilk]

• Had this fix in it: Prevent text shrinking in tooltips; round wrap-width to integer emilk/egui#5161
• Context menu & hover box width is sometimes too narrow #6801 is NOT fixed by this PR :(

@Wumpf you had a pretty solid repro of this yesterday - please test 🙏

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[emilk]

Very nice wgpu cleanup!

[emilk]

@Wumpf says on slack that #6801 is still a problem:

and that happens both with pixels_per_point=1 and 2

[Wumpf]

fixing up lifetime names, then good to merge regardless of its ability to fix the tooltip issue