### Godot version

4.0.beta10

### System information

Windows 11

### Issue description
UPDATE: This problem only occurs when the source code contains inner classes

Before 4.0.Beta9, I could get a GDScript instance by `GDScript.new()` and then set the `source_code` property and then `reload()`, but now it throws an error 
```
USER SCRIPT ERROR: Parse Error: Could not find script "".
   at: GDScript::reload (built-in:1644)
```
In my software, I use the above method when the user modifies the code text, and then read the godot log to implement real-time error checking of the custom user script editor. But now this functionality is completely broken

### Steps to reproduce

1. Create a GDScript instance by `GDScript.new()`
2. set the `source_code` property and then `reload()`

### Minimal reproduction project

N/A
RBSet<GDScript *> dependencies;
	_get_dependencies(dependencies, this);
	dependencies.erase(this);
	return dependencies;
}
RBSet<GDScript *> GDScript::get_inverted_dependencies() {
	RBSet<GDScript *> inverted_dependencies;
	List<GDScript *> scripts;
	{
		MutexLock lock(GDScriptLanguage::singleton->mutex);
		SelfList<GDScript> *elem = GDScriptLanguage::singleton->script_list.first();
		while (elem) {
			scripts.push_back(elem->self());
			elem = elem->next();
		}
	}
	for (GDScript *scr : scripts) {
		if (scr == nullptr || scr == this || scr->destructing) {
			continue;
		}
		RBSet<GDScript *> scr_dependencies = scr->get_dependencies();
		if (scr_dependencies.has(this)) {
			inverted_dependencies.insert(scr);
		}
	}
	return inverted_dependencies;
}
RBSet<GDScript *> GDScript::get_must_clear_dependencies() {