Now that we have scheduling support for animation resolution for both macOS (see bug 266026) and iOS (see bug 268282) we can start blending values. A good start is adding support for blending `opacity` values which are a very simply type.
<rdar://problem/122304627>
Pull request: https://github.com/WebKit/WebKit/pull/23854
Committed 274102@main (c31a0356b67e): <https://commits.webkit.org/274102@main> Reviewed commits have been landed. Closing PR #23854 and removing active labels.