Fixes for Work Challenge Fingerprint

When enrolling fingerprints on both personal and work and then setting
the lock to none or swipe, the fingerprints for that user were not being
correctly removed due to wrong userIds being passed in.

Also fix the wipe dialog message as it was always querying whether the
main user has fingerprints instead of the user the dialog applies to.

Bug: 27263452, 27199237
Change-Id: I8d170e36f31b5595bc0bb41168a87db9f57eda2f