Prevent some desync for poi and pistons

[Lulu13022002]

Closes https://github.com/PaperMC/Paper/issues/5561 This fix two issues:

• poi desync when the BlockPhysicsEvent is cancelled
• the set air to prevent further updates doesn't have the UPDATE_MOVE_BY_PISTON flag and so the rail will drop when removed even with all the previous flags.