d3d11window: Make use of partial presentation with IDXGISwapChain1::Present1
Since we might draw on partial area of backbuffer in case of force-aspect-ratio, presenting only updated area is more efficient way.
See also https://docs.microsoft.com/ko-kr/windows/win32/direct3ddxgi/dxgi-1-2-presentation-improvements
Edited by Seungha Yang