paginator: Add transition-running property
There are a few use cases now where we have to know when the animation has stopped. For example, for "infinite pages": when it stops animating, you remove a page on one end and add it on the other end.
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There are a few use cases now where we have to know when the animation has stopped. For example, for "infinite pages": when it stops animating, you remove a page on one end and add it on the other end.