Revert "Delete wrong format framebuffers instead."

This reverts commit b56c9e553328f9cb199eefd3167e383cf9f07b5c.

It was slowing down Kingdom Hearts a lot in certain areas.
Check texture format changes even for renders.
Merge pull request #3664 from unknownbrackets/gpu-minor

Revert deletion, fix render-to-texture cache matching instead