Add setting for whether to crop images in unexpanded toots

[duxovni]

Fixes #9916 and #9582. Users can now select in the "Appearance" preferences menu whether they want to keep the old cropping behavior (the default) or show all images uncropped.

[ghost]

Deployed this to my instance, I notice it only works on posts with a single image. Is that intended? Posts with two or more images are still cropped.

[duxovni]

Yes, it's deliberate that this only applies to posts with a single image; it's less clear what the correct behavior should be for posts with multiple images. I guess we could display them all uncropped in a single column?

[ghost]

Ah okay, well the description in preferences ("Crop images in non-expanded toots to 16x9") implies that it will apply to all images in a post. I know if I told my users about this feature they would assume it was buggy.

I think there should be an option for both behaviours. Uncropped in a single column wouldn't look great, but some users / instances want that.

[marians]

Better late then never: I just came across this setting in Mastodon and find that it improves my experience significantly. Thanks for this contribution!