### Godot version

4.0 beta 16 and 17

### System information

Windows 11

### Issue description

Before beta 16 you could write `@export_category(name)` and it would make a category with "name" as the name.
Now you must use a string when defining the category name. (`@export_category("name")`)
The issue is that the moment you type something that doesn't start with `"` the engine crashes.

### Steps to reproduce

1. Create a script.
2. Write one of the following:
a) `@export_category()`
b) `@export_group()`
c) `@export_subgroup()`
3. In the parentheses write *any* character other than `"`.
4. Watch it crash.

If you managed to save the file the project will crash when opened.

### Minimal reproduction project

[Minimal.zip](https://github.com/godotengine/godot/files/10561826/Minimal.zip)

} else {
			member->doc_description = get_doc_comment(doc_comment_line);
		}
	}
#endif 
	if (member->identifier != nullptr) {
		if (!((String)member->identifier->name).is_empty()) { 
#ifdef DEBUG_ENABLED
			List<MethodInfo> gdscript_funcs;
			GDScriptLanguage::get_singleton()->get_public_functions(&gdscript_funcs);
			for (MethodInfo &info : gdscript_funcs) {
				if (info.name == member->identifier->name) {
					push_warning(member->identifier, GDScriptWarning::SHADOWED_GLOBAL_IDENTIFIER, p_member_kind, member->identifier->name, "built-in function");
				}
			}
			if (Variant::has_utility_function(member->identifier->name)) {
				push_warning(member->identifier, GDScriptWarning::SHADOWED_GLOBAL_IDENTIFIER, p_member_kind, member->identifier->name, "built-in function");
			}
#endif
			if (current_class->members_indices.has(member->identifier->name)) {
				push_error(vformat(R"(%s "%s" has the same name as a previously declared %s.)", p_member_kind.capitalize(), member->identifier->name, current_class->get_member(member->identifier->name).get_type_name()), member->identifier);
			} else {
				current_class->add_member(member);
			}
		} else {
			current_class->add_member(member);
		}
	}
}
void GDScriptParser::parse_class_body(bool p_is_multiline) {