[enhancement]: Unified Canvas "erase" (paint original)

[shanedk]

Is there an existing issue for this?

• [X] I have searched the existing issues

Contact Details

Discord: shanedk

What should this feature add?

In the Unified Canvas, it's too easy to accidentally paint over part of your image that you don't want to. It would be nice to "erase" what you've drawn, which would basically be tool that would paint back in the pixels from the original PNG file you dropped in.

[shanedk]

Could possibly be a dupe of #2991 depending on how it's implemented.