• style: Update animations when a pseudo-element had animations but no …

    …longer has, and has been re-framed in the meantime.
    
    This is the easy fix.
    
    The hard fix (outlined in the comment) would be nice, but I don't think this bug
    alone justifies it.
    
    Differential Revision: https://phabricator.services.mozilla.com/D38184
    emilio committed Jul 23, 2019