### 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)

error_dialog->set_text(vformat(TTR("Can't open '%s'. The file could have been moved or deleted."), p_path));
	error_dialog->popup_centered();
}
void ScriptEditor::_close_tab(int p_idx, bool p_save, bool p_history_back) {
	int selected = p_idx;
	if (selected < 0 || selected >= tab_container->get_tab_count()) {
		return;
	}
	Node *tselected = tab_container->get_tab_control(selected);
	ScriptEditorBase *current = Object::cast_to<ScriptEditorBase>(tselected);
	if (current) {
		Ref<Resource> file = current->get_edited_resource();
		if (p_save && file.is_valid()) {