Comparing paths is tricky, especially when different operating systems
are involved, with different slashes, encodings, etc. So often a string
comparison is not good enough. Use asset weak reference comparison for
this case, which performs more careful path comparisons.
Not sure if this makes a difference in practice. But it might solve some subtle
issues, and it makes some more sense semantically. So I think it's worth
trying. Originally I was hoping this would fix#123508, but apparently didn't
Pull Request: https://projects.blender.org/blender/blender/pulls/127685
58247efc69