Fix Unlock and Cancel buttons not shown when creating new private tab with lock enabled When "Require Touch ID/Face ID" was enabled for private tabs, the Unlock and Cancel buttons were hidden when creating a new private tab via the + button and cancelling the biometric prompt. - Always show Unlock button when auth fails so user can retry - Set isCancellable=true for non-external view types to show Cancel button Signed-off-by: Eli Hini <8249954+EliHini@users.noreply.github.com>