Use the LivePreviewSurface directly instead of making a copy of it.
Use the LivePreviewSurface directly instead of making a copy of it.

- Save memory caused by creating unnecessary extra surface.
- Save time by not cloning surface.
- Fix an issue where live previews for translucent layers are drawn incorrectly until committed.

Fenex/Pinta,PintaProject/Pinta,PintaProject/Pinta,jakeclawson/Pinta,PintaProject/Pinta,jakeclawson/Pinta,Mailaender/Pinta,Fenex/Pinta,Mailaender/Pinta