Document how to interrupt `PacketPeerUDP.wait()`
Document how to interrupt `PacketPeerUDP.wait()`

This closes #36335.

(cherry picked from commit 25777488fdef29e099bd7112d592a22beb8f9ba8)

ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot