[FRP] Don't extract IME for PIN / Password during setup

Add the flagNoExtractUi to the password / PIN entry field so that it
will not be extracted to a fullscreen mode in phone landscape.

The phone landscape UI currently provides a poor experience because
it masks the message shown to the user (e.g. Passwords require at
least 4 characters)

Bug: 18640065
Change-Id: If67c8f9ae761f1ffda4f841e421e0fd651651649