### 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 (Object::cast_to<TextFile>(p_object)) {
		return true;
	}
	if (Object::cast_to<Script>(p_object)) {
		return true;
	}
	return p_object->is_class("Script");
}
void ScriptEditorPlugin::make_visible(bool p_visible) {
	if (p_visible) {
		script_editor->show();
		script_editor->set_process(true);
		script_editor->ensure_select_current();
	} else {
		script_editor->hide();
		script_editor->set_process(false);
	}
}
void ScriptEditorPlugin::selected_notify() {