[Device Supervision] Update ChooseLockGeneric to bypass choose lock pattern screen.

In SupervisionCredentialProxyActivity, the intent launching ChooseLockGeneric now includes PASSWORD_TYPE_KEY (numeric). This ensures that for both change PIN and PIN recovery flows, ChooseLockGeneric proceeds directly to PIN setup after any credential confirmation, bypassing the lock type selection screen.

Bug: 414941621
Flag: android.app.supervision.flags.enable_supervision_settings_screen
Test: SupervisionCredentialProxyActivityTest
Change-Id: Id63108f67da2c6a8004710a7ca2bdd8b598e79a0