Restore support for VK_COLOR_SPACE_HDR10_HLG_EXT and VK_COLOR_SPACE_HDR10_ST2084_EXT under Xcode12 that was removed due to App Store conflicts using older enum values.
Restore support for VK_COLOR_SPACE_HDR10_HLG_EXT and VK_COLOR_SPACE_HDR10_ST2084_EXT under Xcode12 that was removed due to App Store conflicts using older enum values.