Missing collection / music artist image causes 404 requests

[MIvanchev]

This issue respects the following points:

• This issue is not already reported on GitHub (I've searched it).
• I agree to follow Jellyfin's Code of Conduct.
• This report addresses only a single issue; If you encounter multiple issues, kindly create separate reports for each one.

Describe the bug

This is essentially the same as reported by me for the Android client: jellyfin/jellyfin-androidtv#4432 (comment).

Basically when you create a collection without an image and open that collection, the client does a 404 request probably for the non-existent image. The same happens for missing music artist images.

Reproduction Steps

See description.

Expected/Actual behaviour

See description.

Logs

No response

Server version

10.10.7

Web version

10.10.7

Build version

10.10.7

Platform

Linux

Browser

Firefox

Additional information

No response