[Files F2] Navigate away from "Drive" if it's not available

A fake drive item is displayed on the directory tree before the
prefs is retrieved, when prefs shows drive should be disabled,
we should navigate away from Drive if it's the current active
directory.

This CL fixes the logic in navigateAwayFromDisabledRoot_ function
to use entry as input parameter so it works both for the old tree
and the new tree.

Demo: http://go/scrcast/NjU1MDIwOTM2MTM0NjU2MHxkZWVlNDZjNi0yMw

Bug: b:320576878
Change-Id: I0f7d9480ba7acb3b58569c72bb2c65a2730e68df
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5208670
Reviewed-by: Luciano Pacheco <lucmult@chromium.org>
Commit-Queue: Wenbo Jie <wenbojie@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1248493}