Don't set TextureCategory::SwapBuffer on image viewer texture
Don't set TextureCategory::SwapBuffer on image viewer texture

* This prevents toggling linear/gamma display because swap buffers are always
  interpreted as gamma.

baldurk/renderdoc,baldurk/renderdoc,Zorro666/renderdoc,Zorro666/renderdoc,baldurk/renderdoc,Zorro666/renderdoc,Zorro666/renderdoc,baldurk/renderdoc,baldurk/renderdoc,baldurk/renderdoc,Zorro666/renderdoc,Zorro666/renderdoc