Describe the bug
Whenever the metadata of a game is updated, all images that did not change will be unlinked resulting in them not being displayed.

To Reproduce
Steps to reproduce the behavior:

1. Create & scan library
2. Manually match the game
3. Choose the same title again
4. All images are 404 resulting in black (even though the metadata contains image ids)

Expected behavior
Nothing changes if the images didn't change

Screenshots

General info (please complete the following information):

• Browser: Firefox 141.0.3 (64-bit) on MacOS 15.6.1
• Gameyfin version: 2.1.0-preview

Additional context
N/A