### Godot version

 v4.0.beta11.official.91713ced8

### System information

macOS 12.6.1 Monterey, Apple M1 Pro

### Issue description

After reopening scenes with Sprite2D and trying to edit the region of the sprite again the Godot app crashed.

### Steps to reproduce

1. Open scene node_2d in the project files
2. Go to Sprite2D and click on edit region, pop up should show
3. Close the popup and close the scene with X on the tab
4. Reopen the scene, go to Sprite2D and click on Edit region
5. Godot should crash

### Minimal reproduction project

[region_crash.zip](https://github.com/godotengine/godot/files/10400566/region_crash.zip)

sb_off_x->set_suffix("px");
	sb_off_x->connect("value_changed", callable_mp(this, &TextureRegionEditor::_set_snap_off_x));
	hb_grid->add_child(sb_off_x);
	sb_off_y = memnew(SpinBox);
	sb_off_y->set_min(-256);
	sb_off_y->set_max(256);
	sb_off_y->set_step(1);
	sb_off_y->set_value(snap_offset.y);
	sb_off_y->set_suffix("px");
	sb_off_y->connect("value_changed", callable_mp(this, &TextureRegionEditor::_set_snap_off_y));
	hb_grid->add_child(sb_off_y);
	hb_grid->add_child(memnew(VSeparator));
	hb_grid->add_child(memnew(Label(TTR("Step:"))));
	sb_step_x = memnew(SpinBox);
	sb_step_x->set_min(-256);
	sb_step_x->set_max(256);
	sb_step_x->set_step(1);
	sb_step_x->set_value(snap_step.x);
	sb_step_x->set_suffix("px");
	sb_step_x->connect("value_changed", callable_mp(this, &TextureRegionEditor::_set_snap_step_x));
	hb_grid->add_child(sb_step_x);
	sb_step_y = memnew(SpinBox);
	sb_step_y->set_min(-256);
	sb_step_y->set_max(256);
	sb_step_y->set_step(1);
	sb_step_y->set_value(snap_step.y);
	sb_step_y->set_suffix("px");
	sb_step_y->connect("value_changed", callable_mp(this, &TextureRegionEditor::_set_snap_step_y));
	hb_grid->add_child(sb_step_y);
	hb_grid->add_child(memnew(VSeparator));