LibWeb: Separate CSSAnimation::animationName from Animation::id

Author: https://github.com/Calme1709
Commit: a95cde3660
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/6642
Reviewed-by: https://github.com/AtkinsSJ ✅

Libraries/LibWeb/CSS/StyleComputer.cpp

@@ -1235,7 +1235,7 @@ void StyleComputer::process_animation_definitions(ComputedProperties const& comp
         // An animation applies to an element if its name appears as one of the identifiers in the computed value of the
         // animation-name property and the animation uses a valid @keyframes rule
         auto animation = CSSAnimation::create(document.realm());
-        animation->set_id(animation_properties.name);
+        animation->set_animation_name(animation_properties.name);
         animation->set_timeline(document.timeline());
         animation->set_owning_element(element);