Show carrier name on pin lock screen

When user has DSDS and both sims are locked, the pin lock screen doesn't
show which carrier is requiring the pin.

b/128994337 tracks fixing the "Card 1" name on turning on the phone.

Test: manual
Bug: 125290365
Change-Id: I8c6b6ecd6b3c1e5f111ebbb1ceabbfb2b083ed0d