### 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)

ERR_FAIL_COND(p_event.is_null());
	if (!is_visible_in_tree() || !p_event->is_pressed() || p_event->is_echo()) {
		return;
	}
	if (ED_IS_SHORTCUT("script_editor/next_script", p_event)) {
		if (script_list->get_item_count() > 1) {
			int next_tab = script_list->get_current() + 1;
			next_tab %= script_list->get_item_count();
			_go_to_tab(script_list->get_item_metadata(next_tab));
			_update_script_names();
		}
		accept_event();
	}
	if (ED_IS_SHORTCUT("script_editor/prev_script", p_event)) {
		if (script_list->get_item_count() > 1) {
			int next_tab = script_list->get_current() - 1;
			next_tab = next_tab >= 0 ? next_tab : script_list->get_item_count() - 1;
			_go_to_tab(script_list->get_item_metadata(next_tab));
			_update_script_names();
		}
		accept_event();
	}
	if (ED_IS_SHORTCUT("script_editor/window_move_up", p_event)) {