Notify on restore

This is required for any APN writers who need to reinsert APNs when the
user requests a restore-to-default.

Bug: 73773124
Test: telephony provider unit test
Change-Id: I549410637a2ac2f2b89b23e3e0d70ef8c42c3afd
Merged-In: I549410637a2ac2f2b89b23e3e0d70ef8c42c3afd
2 files changed