Fix Confirm/Choose Credentials strings related to profile

The messages in ConfirmDeviceCredentials have been updated to
inform the user that the pattern/pin/password to be entered is
the profile one.

The strings in the confirmation dialog when the user removes
the lock have also been updated.

Ideally we would have a parametrized approach to strings here,
but capitalization makes it a hard problem.

Bug: 26706338, 26709116
Change-Id: I9f5508d6f449f9e572d65e5b2dcb15cca23832b3