Correctly register editor-only module classes with the API

[YuriSizov]

Fixes #86206. We can call it a regression from #49524. Probably worth cherry-picking, though technically this changes the exposed API.

This pattern is used in the GLTF module, btw.

[Bromeon]

Just recompiled Godot release using commit 0f8c955.
The class is now correctly exposed to the JSON as:

		{
			"name": "ResourceImporterOggVorbis",
			"is_refcounted": true,
			"is_instantiable": true,
			"inherits": "ResourceImporter",
			"api_type": "editor",
			"methods": [ <load_from_buffer, load_from_file> ]
		},

I'm not very familiar with the codebase, but assuming that GDREGISTER_CLASS cannot return, it looks correct. A small test of our dodge-the-creeps example actually shows it working in Release.

Thanks a lot for this super-fast fix! 🙂

[YuriSizov]

Thanks for testing!

[YuriSizov]

Cherry-picked for 4.2.2.