[BiometricsV2] Remove "Try again" button from errorDialog

Remove "Try again" button from fingerprint enrolling error dialog for
biometrics v2.

Test: Manual (Enable biometrics v2, Start enrollment and don't
      complete it for 10 minutes; observe the dialog)
Test: atest FingerprintEnrollEnrollingViewModelTest
      FingerprintEnrollmentActivityTest
Bug: 280546173
Change-Id: I844786719a41b1a3d0e86ab32b74ab9b5aeaa0a1