### 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)

switch (file_dialog_option) {
		case FILE_NEW_TEXTFILE: {
			Error err;
			{
				Ref<FileAccess> file = FileAccess::open(p_file, FileAccess::WRITE, &err);
				if (err) {
					EditorNode::get_singleton()->show_warning(TTR("Error writing TextFile:") + "\n" + p_file, TTR("Error!"));
					break;
				}
			}
			if (EditorFileSystem::get_singleton()) {
				if (textfile_extensions.has(p_file.get_extension())) {
					EditorFileSystem::get_singleton()->update_file(p_file);
				}
			}
			if (!open_textfile_after_create) {
				return;
			}
			[[fallthrough]];
		}
		case FILE_OPEN: {
			open_file(p_file);