Don't reset elapsed time every resize on DXGI interop. #585

Job	Run time
Build windows-latest \|\| SHARED=OFF \|\| PLATFORM=SDL	22m 8s
Build windows-latest \|\| SHARED=OFF \|\| PLATFORM=libretro	15m 38s
Build windows-latest \|\| SHARED=ON \|\| PLATFORM=SDL	19m 17s
Build windows-latest \|\| SHARED=ON \|\| PLATFORM=libretro	14m 55s
Build ubuntu-latest \|\| SHARED=OFF \|\| PLATFORM=SDL	19m 28s
Build ubuntu-latest \|\| SHARED=OFF \|\| PLATFORM=libretro	17m 44s
Build ubuntu-latest \|\| SHARED=ON \|\| PLATFORM=SDL	18m 4s
Build ubuntu-latest \|\| SHARED=ON \|\| PLATFORM=libretro	17m 55s
	2h 25m 9s

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