Formatting removes code regions

[jevonsp]

Steps to repro:

make a script with the following text (a snippet from my project):

extends Node

@warning_ignore_start("unused_signal")

#region PLAYER
signal toggle_player
signal toggle_in_battle
signal step_completed(position: Vector2)
signal send_respawn_player
signal battle_started
#endregion
#region WILD/TRAINER
signal wild_battle_requested(mon_data: MonsterData, level: int)
signal trainer_battle_requested(trainer: Trainer)
#endregion

@warning_ignore_restore("unused_signal")

on save, the #endregion tags will be removed when formatted