ImageBufferIOSurfaceBackend bitmap draws spend time maintaining the color conversion cache This happens for small bitmaps when they're color matched to the destination bitmap. This is redundant as the cache never gets hit since the images are transient. Mark the images transient.
<rdar://problem/106082568>
Pull request: https://github.com/WebKit/WebKit/pull/10994
Committed 261309@main (40ecc82d81c3): <https://commits.webkit.org/261309@main> Reviewed commits have been landed. Closing PR #10994 and removing active labels.