GBA Video: Fix postprocessing sprites with objwin and win0/1
GBA Video: Fix postprocessing sprites with objwin and win0/1

askotx/mgba,sergiobenrocha2/mgba,zerofalcon/mgba,bentley/mgba,Touched/mgba,Touched/mgba,mgba-emu/mgba,Anty-Lemon/mgba,cassos/mgba,sergiobenrocha2/mgba,askotx/mgba,matthewbauer/mgba,MerryMage/mgba,matthewbauer/mgba,sergiobenrocha2/mgba,askotx/mgba,cassos/mgba,zerofalcon/mgba,nattthebear/mgba,Iniquitatis/mgba,libretro/mgba,iracigt/mgba,jeremyherbert/mgba,Anty-Lemon/mgba,jeremyherbert/mgba,fr500/mgba,AdmiralCurtiss/mgba,jeremyherbert/mgba,bentley/mgba,Iniquitatis/mgba,zerofalcon/mgba,Iniquitatis/mgba,Anty-Lemon/mgba,iracigt/mgba,Iniquitatis/mgba,MerryMage/mgba,fr500/mgba,AdmiralCurtiss/mgba,libretro/mgba,libretro/mgba,mgba-emu/mgba,libretro/mgba,iracigt/mgba,Touched/mgba,Anty-Lemon/mgba,cassos/mgba,mgba-emu/mgba,fr500/mgba,libretro/mgba,jeremyherbert/mgba,fr500/mgba,askotx/mgba,nattthebear/mgba,MerryMage/mgba,sergiobenrocha2/mgba,iracigt/mgba,sergiobenrocha2/mgba,AdmiralCurtiss/mgba,mgba-emu/mgba