Wrong image source when uploading from Pixiv

[Minitajfun]

Describe the bug

When uploading images from Pixiv using the extension, it sometimes uploads images using a direct link (https://i.pximg.net) instead of the general one (https://www.pixiv.net).

To Reproduce

Steps to reproduce the behavior:

1. Go to Pixiv
2. Select any artwork
3. Click the icon on the search bar / Click "Upload to Danbooru" from the context menu
4. Check source

Additional info:

• Browser: Firefox Developer Edition 119.0b9
• Extension ver: 3.3.1
• This issue is really inconsistent - sometimes it's every other time, sometimes it's all the time, and sometimes everything works fine until you completely forget about the issue

[ZipFile]

This issue resurfaces every time Pixiv bans Danbooru accounts/ips/etc so that it can't do magic of fixing links. Extension on its own is dumb and does not process Pixiv links in any way. So technically proper fix would be to introduce the same functionality into the extension itself, but I'm reluctant to do so (huge pain in the ass).