Images uploaded as webp are force converted into jpg

[Volmies]

Describe the bug
Uploading an image in the webp format will have it be converted into jpg automatically, this results in a loss of quality while simultaneously increasing the file size by upwards of 600%, depending on the size of the original image.

To Reproduce
Steps to reproduce the behavior:

1. Upload webp format image as part of a post or reply
2. Download posted image from bluesky
3. Compare size of downloaded image to original

Expected behavior
Webp images should be exempt from the conversion, they take the same (or less) amount of space while providing far better quality than jpg.

Details

• Platform: Desktop/Chrome/Windows, though this is applicable to all platforms
• Platform version: Windows 11
• App version: 1.68.0