[automerge] Use android.app.AlertDialog in SetupChooseLockGeneric 2p: cd517a654a am: e39120e45c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/17052922

Change-Id: Iec0a0fb6c595a7e1f416dd3c3937085989caf4f5