[Auto Pin Confirm]: Trigger PIN verification when auto confirm setting is being turned on or off

- Fix the logic to set the pin_auto_confirm setting before triggering the password save workflow in ChooseLockPassword

Bug: 275385372
Test: atest AutoPinConfirmPreferenceControllerTest
Test: Manual Test
Change-Id: Id6774bc9afcd6d3161e023dc52911ae3e1f556c9