### 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)

num_chars = 0;
				} else {
					num_chars++;
				}
			}
		}
		
		if (!has_file_flag) {
			args.push_back(script_path);
		}
		Error err = OS::get_singleton()->create_process(path, args);
		if (err == OK) {
			return false;
		}
		WARN_PRINT("Couldn't open external text editor, using internal");
	}
	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;
		}
		if ((scr != nullptr && se->get_edited_resource() == p_resource) || se->get_edited_resource()->get_path() == p_resource->get_path()) {
			if (should_open) {
				se->enable_editor(this);
				if (tab_container->get_current_tab() != i) {
					_go_to_tab(i);
					_update_script_names();
				}
				if (is_visible_in_tree()) {
					se->ensure_focus();