[scroll-animations] WPT test scroll-animations/css/timeline-scope.html is a failure

[graouts]

37f0b2e

[scroll-animations] WPT test `scroll-animations/css/timeline-scope.html` is a failure
https://bugs.webkit.org/show_bug.cgi?id=288755

Reviewed by Dean Jackson.

When a `timeline-scope: none` value is set, we must make sure to unregister all timelines
that were previously created for a name within that scope.

Then, if an animation has its `animation-timeline` set to a value that has not yet resolved
to a scoped name, we must keep it in the list of pending animations such that if we move to
a value other then `timeline-scope: none`, this timeline name may resolve dynamically.

* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/css/timeline-scope-expected.txt:
* Source/WebCore/animation/StyleOriginatedTimelinesController.cpp:
(WebCore::StyleOriginatedTimelinesController::attachAnimation):
(WebCore::StyleOriginatedTimelinesController::updateNamedTimelineMapForTimelineScope):

Canonical link: https://commits.webkit.org/291303@main

9e0af04

Misc	iOS, visionOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 win
✅ 🧪 bindings	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2	✅ 🧪 win-tests
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 api-wpe
	✅ 🧪 ios-wk2-wpt	✅ 🧪 mac-wk1	✅ 🛠 wpe-cairo
	✅ 🧪 api-ios	✅ 🧪 mac-wk2	🛠 gtk
	✅ 🛠 vision	✅ 🧪 mac-AS-debug-wk2	❌ 🧪 gtk-wk2
	✅ 🛠 vision-sim	✅ 🧪 mac-wk2-stress	✅ 🧪 api-gtk
	✅ 🧪 vision-wk2	🧪 mac-intel-wk2	✅ 🛠 playstation
✅ 🛠 🧪 unsafe-merge	✅ 🛠 tv	✅ 🛠 mac-safer-cpp
	✅ 🛠 tv-sim
	✅ 🛠 watch
	✅ 🛠 watch-sim

[webkit-early-warning-system]

EWS run on previous version of this PR (hash 03b9375)

Details

Misc	iOS, visionOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	🛠 ios	🛠 mac	🛠 wpe	🛠 win
✅ 🧪 bindings	🛠 ios-sim	🛠 mac-AS-debug	🧪 wpe-wk2	🧪 win-tests
✅ 🧪 webkitperl	🧪 ios-wk2	🧪 api-mac	🧪 api-wpe
	🧪 ios-wk2-wpt	🧪 mac-wk1	🛠 wpe-cairo
	🧪 api-ios	🧪 mac-wk2	🛠 gtk
	🛠 vision	🧪 mac-AS-debug-wk2	🧪 gtk-wk2
	🛠 vision-sim	🧪 mac-wk2-stress	🧪 api-gtk
	⏳ 🧪 vision-wk2	🧪 mac-intel-wk2	🛠 playstation
	🛠 tv	🛠 mac-safer-cpp
	🛠 tv-sim
	🛠 watch
	🛠 watch-sim

[webkit-early-warning-system]

EWS run on current version of this PR (hash 9e0af04)

Details

Misc	iOS, visionOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 win
✅ 🧪 bindings	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2	✅ 🧪 win-tests
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 api-wpe
	✅ 🧪 ios-wk2-wpt	✅ 🧪 mac-wk1	✅ 🛠 wpe-cairo
	✅ 🧪 api-ios	✅ 🧪 mac-wk2	🛠 gtk
	✅ 🛠 vision	✅ 🧪 mac-AS-debug-wk2	❌ 🧪 gtk-wk2
	✅ 🛠 vision-sim	✅ 🧪 mac-wk2-stress	✅ 🧪 api-gtk
	✅ 🧪 vision-wk2	🧪 mac-intel-wk2	✅ 🛠 playstation
✅ 🛠 🧪 unsafe-merge	✅ 🛠 tv	✅ 🛠 mac-safer-cpp
	✅ 🛠 tv-sim
	✅ 🛠 watch
	✅ 🛠 watch-sim

[webkit-commit-queue]

Committed 291303@main (37f0b2e): https://commits.webkit.org/291303@main

Reviewed commits have been landed. Closing PR #41553 and removing active labels.