### 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)

se->convert_indent_to_tabs();
			}
		}
		Ref<TextFile> text_file = scr;
		if (text_file != nullptr) {
			se->apply_code();
			_save_text_file(text_file, text_file->get_path());
			break;
		} else {
			EditorNode::get_singleton()->save_resource(scr);
		}
		se->tag_saved_version();
	}
	disk_changed->hide();
}
void ScriptEditor::_res_saved_callback(const Ref<Resource> &p_res) {
	for (int i = 0; i < tab_container->get_tab_count(); i++) {
		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
		if (!se) {
			continue;
		}
		Ref<Resource> scr = se->get_edited_resource();
		if (scr == p_res) {
			se->tag_saved_version();
		}
	}
	_update_script_names();
	_trigger_live_script_reload();
}
void ScriptEditor::_scene_saved_callback(const String &p_path) {