Fix Talkback should not announce disruptive announcement

"Re-enter your PIN" page.

Remove the calling announceForAccessibility() to prevent disruptive
announcement.

Flag: EXEMPT bugfix

Bug: 383259346
Bug: 384608181

Test: local build and verify Talkback announcement in
"Re-enter your PIN" page.

Change-Id: Ide29dde477a095db12eb959dc3d89b6689bd6ab2