fix(react-router): on initial load the router.state.status does not transition to "idle"

[SeanCassiere]

On the initial load, the router's status does not transition back to "idle". This was working correctly prior to the 1.28.8 release.

Turns out, that the usePrevious hook used by the <RouterProvider>, wasn't actually storing the previous value so the conditions for firing the events were never met during the initial load.

Fixes #1552

[nx-cloud]

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[SeanCassiere]

Tanner mentioned this should be done in the router events and its possibly an event that's not firing correctly.