All settings within same filterable containers are visible when search is matched

[nathanc7278]

Fixes #35917

Modified the MatchingFilter setter in SettingsSection.cs to additionally mark MatchingFilter attribute of child elements to true when a setting is being searched. Added a private helper function showIFilterableChildren that recurses on IContainerEnumerable<Drawable>.

Before:

before.2.mp4

After:

after.1.mp4

A big downside of this approach is that it makes the screens a bit cluttered when searching for more popular options like "cursor"

[peppy]

I don't get it. Why does "delete" show the whole maintenance section? Why does "export" show "Learn more about lazer"? This doesn't make sense. If we're doing this kind of approach, unrelated buttons/controls need to be dimmed or something.

In the linked issue, I proposed keeping the other buttons visible for that specific control, because they are horizontally dependent on each other for alignment.

[nathanc7278]

I don't get it. Why does "delete" show the whole maintenance section? Why does "export" show "Learn more about lazer"? This doesn't make sense. If we're doing this kind of approach, unrelated buttons/controls need to be dimmed or something.

In the linked issue, I proposed keeping the other buttons visible for that specific control, because they are horizontally dependent on each other for alignment.

Thanks for clarifying. I will take a look at how to only show buttons that are in the same horizontal layer.