[web-animations-1] If discretely-animating components match in value, don't fall back to discrete on the whole property.

Author: fantasai

web-animations-1/Overview.bs

@@ -3024,7 +3024,8 @@ in each property's property definition table:
     (see [[css-values-4#combining-values]]).
     If the number of components or the types of corresponding components
     do not match,
-    or if any component value uses [=discrete=] animation,
+    or if any component value uses [=discrete=] animation
+    and the two corresponding values do not match,
     then the property values combine as [=discrete=].
 
   <dt><dfn>repeatable list</dfn>