[2/2] Migrating ShadeCarrierGroup mobile icons to modern status bar data pipeline

Hooks up the ShadeCarrierGroup to depend on only the new data pipeline. The UI is left mostly as-is for now, with the change being the ShadeCarrier no longer having its own version of the mobile icon layout, and the text view for the carrier name has been moved inside the ModernStatusBarView.

Bug: 288631206
Test: Manually verified no visual change with flag enabled, with both 1 and 2 sims
Test: Added/updated unit tests
Change-Id: Iaf91e5606640c5fad6e51ce3b6607e65f14d3bcb