### 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 err;
	Ref<TextFile> text_file = _load_text_file(fpath, &err);
	if (text_file.is_valid()) {
		edit(text_file);
		TextEditor *te = Object::cast_to<TextEditor>(_get_current_editor());
		if (te) {
			te->goto_line_selection(line_number - 1, begin, end);
		}
	}
}
void ScriptEditor::_start_find_in_files(bool with_replace) {
	FindInFiles *f = find_in_files->get_finder();
	f->set_search_text(find_in_files_dialog->get_search_text());
	f->set_match_case(find_in_files_dialog->is_match_case());
	f->set_whole_words(find_in_files_dialog->is_whole_words());
	f->set_folder(find_in_files_dialog->get_folder());
	f->set_filter(find_in_files_dialog->get_filter());
	find_in_files->set_with_replace(with_replace);
	find_in_files->set_replace_text(find_in_files_dialog->get_replace_text());
	find_in_files->start_search();
	EditorNode::get_singleton()->make_bottom_panel_item_visible(find_in_files);
}
void ScriptEditor::_on_find_in_files_modified_files(PackedStringArray paths) {
	_test_script_times_on_disk();
	_update_modified_scripts_for_external_editor();
}
void ScriptEditor::_filter_scripts_text_changed(const String &p_newtext) {
	_update_script_names();
}
void ScriptEditor::_filter_methods_text_changed(const String &p_newtext) {