Fix culling for negative sized UI elements

[GiantBlargg]

Objective

Fixes #22906

Solution

A similar solution had already been implemented for glyphs so I just copied that.

Testing

See #22906 for a reproduction of the bug. After applying this fix, the result matches the expected.

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[ickshonpe]

Looks good.

We should add some cases to the ui testbed for this and change the color of the text in the ui_transform example from black to a color that would be visible when the panel is missing, but those can be left to a follow up.

[GiantBlargg]

Added fix to other pipelines as well. Feels like a lot of duplicated code though. I wonder if some parts could be consolidated.

[kfc35]

Tested the change on the reproduction example and it looks good 👍

RE: code deduplication, I personally think it can be spun out into a different issue to evaluate what code in those various prepare functions should be consolidated

[GiantBlargg]

RE: code deduplication, I personally think it can be spun out into a different issue to evaluate what code in those various prepare functions should be consolidated

Yeah, no I wasn't suggesting to do it here. Somebody else can handle that.

[ickshonpe]

Added fix to other pipelines as well. Feels like a lot of duplicated code though. I wonder if some parts could be consolidated.

The main problem is the UI renderer is just really behind rest of Bevy's rendering and needs a complete overhaul. I've held back from doing big refactors here because it felt like adding any more abstractions or optimisations might not really achieve anything in the long term except to make migration to a better architecture more awkward.