hide restricted notification from unregistered nw

under poor cell coverage, devices might roams to other
network with unregistered service. We should not handle
those invalid restricted service indications from uncamped
networks. Add condition check before showing the notification

Bug: 70168086
Test: Build
Change-Id: I07637ccdbacff494038d4fc758904c430d7e6817
(cherry picked from commit 41babf58c972b97bdea4c02ae18c3f5718af7891)
Merged-in: I07637ccdbacff494038d4fc758904c430d7e6817