Safari stopped triggering popstate on load from version 10 (~2016) so we can safely remove this workaround. https://developer.mozilla.org/en-US/docs/Web/API/Window/popstate_event#the_history_stack

Absent popstate event data suggests that the event originates from a same-page anchor click. Reconcile the empty state by incrementing the History's currentIndex, replacing the null history entry, setting the View's lastRenderedLocation, and then caching it

…outside a Visit