feat: scrollable field list navigation sidebar in new generate UI

[mkapal]

When using the New Generate UI (Preview), the left sidebar containing option navigation is now scrollable if the list height overflows the available vertical space.

Demo (IntelliJ):

Screen.Recording.2024-05-22.at.21.19.42.mov

[nx-cloud]

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[mkapal]

This is still not working correctly in VS Code. The scrollbar doesn't appear all the time when it should:

Screen.Recording.2024-05-22.at.21.44.59.mov

[MaxKless]

do you need any help here? Is there something I can do? :)

[mkapal]

Sure, can you please have a look how to make it work in VS Code too?

[MaxKless]

I'll look into it as soon as I have the time :)

[MaxKless]

Hey! Sorry I haven't gotten around to this yet as it's not super high priority. Scrollbars in web views are a bit tricky but I'll look into it.