fix: Remove visual 0 visual threshold (#21402)

.github/workflows/acceptance.yml

@@ -212,7 +212,6 @@ jobs:
         id: visual-snapshots-diff
         uses: getsentry/action-visual-snapshot@v2
         with:
-          threshold: '0'
           api-token: ${{ secrets.VISUAL_SNAPSHOT_SECRET }}
           github-token: ${{ secrets.GITHUB_TOKEN }}
           gcs-bucket: 'sentry-visual-snapshots'