Fix image loading in chat lists

[mock-foundation]

Fix image loading in chat lists

[ggoraa]

Bruh, it's still broken, but partially
If a TDImage view will be rebuilt with the old File instance, it will still show the old File instead of grabbing the new one

[ggoraa]

I think of fixing it this way: instead of passing a File instance to TDImage, it will be just better to pass a file ID instead, and on view appearing it will just execute the downloadFile TDLib method, which will just return the downloaded file if it's already downloaded

[ggoraa]

Forgot to close this lol
Done