### 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)

int line = p_script->get_member_line(p_method);
	if (line == -1) {
		return false;
	}
	return edit(p_script, line, 0);
}
void ScriptEditor::set_live_auto_reload_running_scripts(bool p_enabled) {
	auto_reload_running_scripts = p_enabled;
}
void ScriptEditor::_help_search(String p_text) {
	help_search_dialog->popup_dialog(p_text);
}
void ScriptEditor::_open_script_request(const String &p_path) {
	Ref<Script> scr = ResourceLoader::load(p_path);
	if (scr.is_valid()) {
		script_editor->edit(scr, false);
		return;
	}
	Error err;
	Ref<TextFile> text_file = script_editor->_load_text_file(p_path, &err);
	if (text_file.is_valid()) {
		script_editor->edit(text_file, false);
		return;
	}
}
void ScriptEditor::register_syntax_highlighter(const Ref<EditorSyntaxHighlighter> &p_syntax_highlighter) {