Reverts zed-industries/zed#9741

/cc @niklaswimmer it looks like that PR change broke our rendering of
avatars (as @bennetbo found out) - they have a blue-ish tint now, which
I suppose might have to do with change between BGRA and RGBA. I'm gonna
revert it for now, let's reopen it though.


![image](https://github.com/zed-industries/zed/assets/24362066/3078d9c6-9638-441b-8b32-d969c46951e0)

Release Notes:

- N/A