### Godot version

4.0 beta 12 mono

### System information

MacOS 13.1, Apple M1 Pro

### Issue description

When `text_editor/external/use_external_editor` is set to true but `text_editor/external/exec_path` is not set and I create a new script and attach it to a node Godot freezes and i need to force quit the application.
Also after a restart when double clicking on the script the application freezes but I can quit normally

### Steps to reproduce

- Set Use External Editor to true in Editor Settings and leave Exec Path empty
- Create a new project with Moblie Renderer and Git Versioning in Godot
- Create a 3D Scene
- Create a gd script in the FileSystem inspector or directly attach the script to a node

### Minimal reproduction project

[New Game Project.zip](https://github.com/godotengine/godot/files/10420510/New.Game.Project.zip)

if (p_idx == recent_scripts->get_item_count() - 1) {
		EditorSettings::get_singleton()->set_project_metadata("recent_files", "scripts", Array());
		call_deferred(SNAME("_update_recent_scripts"));
		return;
	}
	Array rc = EditorSettings::get_singleton()->get_project_metadata("recent_files", "scripts", Array());
	ERR_FAIL_INDEX(p_idx, rc.size());
	String path = rc[p_idx];
	
	if (FileAccess::exists(path)) {
		List<String> extensions;
		ResourceLoader::get_recognized_extensions_for_type("Script", &extensions);
		if (extensions.find(path.get_extension())) {
			Ref<Script> scr = ResourceLoader::load(path);
			if (scr.is_valid()) {
				edit(scr, true);
				return;
			}
		}
		Error err;
		Ref<TextFile> text_file = _load_text_file(path, &err);