If they follow through with this Israel should simply declare war against Palestine at its first instance of violence towards them and obliterate it.
That’s what they did to us in ‘48. We still aren’t obliterated, though. Ignore it like the previous several stupid resolutions purporting to create a Pali state, and they will just keep on as they have.
They don’t want a state. The UN can’t create a state where the reality of a state does not exist.