Revert un-crouch when opening GUI (Revert MC-163218)

Until 1.21.6 in Java Edition, players were able to maintain crouch with any GUI open. (This had parity with Bedrock edition.) Then MC-163218 was submitted (a "bug report" about something that should work as intended), and it was "Fixed". Now, when you open a GUI while crouching in Java edition, it doesn't maintain crouch.

This is a problem because in servers where you don't want to be located on a locator bar, you have the potential to be spotted if you use any GUI, text included.

It's also a problem in things like Hardcore worlds where you want to keep crouching to maintain your position in a precarious situation or want to avoid being seen by hostile mobs.

It's a problem as well because if you want to maintain your position on a ladder, you go down just because you're using a crafting table or whatever.

In no way should this be seen as "intended behavior". This is extremely clunky, has no reason to work this way, and also doesn't have parity with Bedrock, something Mojang claims they are aiming towards.
This sucks. Please help me revert this change.