Minecraft improperly grabs mouse and keyboard events on Linux

Has some improper key and pointer capturing on Linux. Here are examples of usability issues:

• Can't take screenshots under Ubuntu 22.04 with the system's gnome screenshot tool. Either PrintScreen key is completely captured (thus not triggering Ubuntu's screenshot utility) or unity pauses, opens the pause menu and loses focus without opening screeshot tool
• When using Ubuntu's "Auto hide Dock", rotating quickly to the left (moving muse quickly left) in the game causes the dock to reappear, even though there is no cursor visible.
• While debugging minecraft, for example when debugging mods, minecraft grabs exclusive use of a cursor, and doesn't give it up. This causes the issue such as https://github.com/minecraft-dev/MinecraftDev/issues/132.
• Trying to press the Activity shortcut (windows/super key) does nothing when the game isn't paused.