### 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 (p_line > 0) {
					se->goto_line(p_line - 1);
				}
			}
			_update_script_names();
			script_list->ensure_current_is_visible();
			return true;
		}
	}
	
	ScriptEditorBase *se = nullptr;
	for (int i = script_editor_func_count - 1; i >= 0; i--) {
		se = script_editor_funcs[i](p_resource);
		if (se) {
			break;
		}
	}
	ERR_FAIL_COND_V(!se, false);
	se->set_edited_resource(p_resource);
	
	bool highlighter_set = false;
	for (int i = 0; i < syntax_highlighters.size(); i++) {
		Ref<EditorSyntaxHighlighter> highlighter = syntax_highlighters[i]->_create();
		if (highlighter.is_null()) {
			continue;
		}
		se->add_syntax_highlighter(highlighter);
		if (scr != nullptr && !highlighter_set) {
			PackedStringArray languages = highlighter->_get_supported_languages();