### Godot version

4.0 d93b66a

### System information

Windows 10 x64

### Issue description

I have a 2D scene with some 3D nodes. The root is node 2D, most nodes are 2D, I have 2D node selected. When I switch scene tab and back, the editor switches to 3D view, even though the 2D node is still selected.

I managed to strip the scene to bare minimum. You need a Node3D with Camera3D and DirectionalLight3D children.

https://user-images.githubusercontent.com/2223172/213327465-ba07760e-6dab-43c0-96e8-5109fcc0a576.mp4


### Steps to reproduce

1. Make 2D scene
2. Add some 3D
3. This bug has a chance to happen
4. Check the repro for setup that reproduces the issue

### Minimal reproduction project

[3DBug.tscn.txt](https://github.com/godotengine/godot/files/10452297/3DBug.tscn.txt)

ERR_FAIL_COND_V(!p_object || !gui_base, nullptr);
	Ref<Script> scr = p_object->get_script();
	if (scr.is_null() && p_object->is_class("Script")) {
		scr = p_object;
	}
	if (scr.is_valid() && !script_icon_cache.has(scr)) {
		Ref<Script> base_scr = scr;
		while (base_scr.is_valid()) {
			StringName name = EditorNode::get_editor_data().script_class_get_name(base_scr->get_path());
			String icon_path = EditorNode::get_editor_data().script_class_get_icon_path(name);
			Ref<ImageTexture> icon = _load_custom_class_icon(icon_path);
			if (icon.is_valid()) {
				script_icon_cache[scr] = icon;
				return icon;
			}