Automatic update from web-platform-tests [css-image-animation-1] Remove .tentative. from wpt and enhance suites Rename the css-image-animation WPTs to remove the .tentative suffix. To make them deterministic, as suggested in CL [1]: - Replace setTimeout()-based waits with waitForFrameTime() from image-animation-utils.js, so waits are driven by frame time. - Start images with image-animation: paused and switch to test data only after load, so each animation timeline starts from a known point. - Pause the animation and wait a frame right before takeScreenshot() to capture the stable frame. [1] https://chromium-review.googlesource.com/c/chromium/src/+/7771511/comment/34cbb664_6fcc7631/ Fixed: 521966698 Change-Id: I608fd01d07233cdc0ed5bb49912ea8edcf15e862 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7911524 Commit-Queue: Seokho Song <seokho@chromium.org> Reviewed-by: Robert Flack <flackr@chromium.org> Cr-Commit-Position: refs/heads/main@{#1657651} -- wpt-commits: 9089531cfc7a76fe192e640f0cd60141b1f21b3f wpt-pr: 61090