Don't launch Choose Lock again if recreating

When ChooseLockGeneric is recreated, don't automatically launch
ChooseLock[Password/Pattern] even if the corresponding intent extras
are specified, because one would have been launched in the previous
onCreate.

Test: Manual
Bug: 64605627
Change-Id: I227a14abb2f4dd6c4577186a3d8164df0bec7791