### Godot version

4.1 rc3

### System information

Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1060 (NVIDIA; 30.0.15.1403) - Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 Threads)

### Issue description

This™
![image](https://github.com/godotengine/godot/assets/2223172/cb33110f-a5b0-400a-951f-3fa425f05714)

It can still happen, but it's more difficult to trigger.

### Steps to reproduce

1. Create a new scene with a Control node
2. Add Theme to the Control
3. Open Theme Editor
4. Clear the `theme` property in Control
5. Save, with Theme Editor opened
6. Restart

### Minimal reproduction project

N/A
int new_index = editor_data.get_edited_scene();
	int old_index = new_index;
	if (new_index > 0) {
		new_index = new_index - 1;
	} else if (editor_data.get_edited_scene_count() > 1) {
		new_index = 1;
	} else {
		editor_data.add_edited_scene(-1);
		new_index = 1;
	}
	if (p_change_tab) {
		_scene_tab_changed(new_index);
	}
	editor_data.remove_scene(old_index);
	_update_title();
	_update_scene_tabs();
}
void EditorNode::_remove_scene(int index, bool p_change_tab) {
	
	
	editor_data.clear_script_icon_cache();
	if (editor_data.get_edited_scene() == index) {
		
		_remove_edited_scene(p_change_tab);
	} else {
		
		editor_data.remove_scene(index);
	}
}
void EditorNode::set_edited_scene(Node *p_scene) {