Allow artist images to be generated from artist's albums when no tracks available

Feature description

For instances when the artist is an album artist but has authored no tracks. For example, they have made a compilation.
Currently, an artist image cannot be generated from their release.

Problem solved

Is a logical expectation of consistency, I would say. A separate operation would be preferable for maximum control.

Brought benefits

See above - less missing artist images.

Device type

Phone

I searched existing feature requests

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