Fixed that video calling data usage was not counted under phone app

The default dialer uid was not initialized correctly in telephony.
Added another check to ensure the uid is set correctly at the time
when we calculate data usage.

Test: Manual
bug: 65644451
Merged-In: I870d0a253c6df46dcbafa834d73123536e36e45f
Change-Id: I870d0a253c6df46dcbafa834d73123536e36e45f
(cherry picked from commit c1a30c1a)