Refesh mobile network details page on carrier config changes

In general the mobile network details page has several preference
controllers that don't listen to carrier config changes, so instead of
having each one add a listener, we instead just have one listener and
refresh the entire page when we see the broadcast.

Fixes: 135587885
Test: make RunSettingsRoboTests
Change-Id: Iff5b28dbfe12d94c901b442b23cece8e68218983