Fix user color overlay is not applied

Resource overlay is now done in runtime with non-system resources object.
Amend getDefaultUserIcon to take resources object as parameter.

BUG: 69355037
Test: Factory reset, verify that overlayed color is used in multiple
places, including keyguard, the bar under quick settings and Settings app.

Change-Id: I20b0527bdcb2eb38e8bea6a05f53eea1edcba932