95886fdfe2
Since 2fbf206491 it's possible to store named strings in context, rather
than having to wrap them in RNA pointers. Here this can avoid some
boilerplate code.
After this the `AssetCatalogPath` RNA struct should be unused. Might
be better to remove it in 5.0 only though, since it's part of the API.
Added to #110461.
Pull Request: https://projects.blender.org/blender/blender/pulls/122331