### 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_script.is_null());
	Vector<DocData::ClassDoc> documentations = p_script->get_documentation();
	for (int j = 0; j < documentations.size(); j++) {
		const DocData::ClassDoc &doc = documentations.get(j);
		if (EditorHelp::get_doc_data()->has_doc(doc.name)) {
			EditorHelp::get_doc_data()->remove_doc(doc.name);
		}
	}
}
void ScriptEditor::update_docs_from_script(const Ref<Script> &p_script) {
	ERR_FAIL_COND(p_script.is_null());
	Vector<DocData::ClassDoc> documentations = p_script->get_documentation();
	for (int j = 0; j < documentations.size(); j++) {
		const DocData::ClassDoc &doc = documentations.get(j);
		EditorHelp::get_doc_data()->add_doc(doc);
		update_doc(doc.name);
	}
}
void ScriptEditor::_update_selected_editor_menu() {
	for (int i = 0; i < tab_container->get_tab_count(); i++) {
		bool current = tab_container->get_current_tab() == i;