fix(GRO-206): CTO review fixes — active filter on super user count + CI TAG fix

- Add active=true filter to all 3 super user count queries in staff.ts
  (revoke, deactivate, delete) so inactive super users aren't counted
- Fix ci.yml deploy step: use steps.version.outputs.tag instead of
  invalid github.sha::7 expression
- Remove GRO-206 CI trigger junk line from README.md

Co-Authored-By: Paperclip <noreply@paperclip.ing>

.github/workflows/ci.yml

@@ -212,7 +212,7 @@ jobs:
 
       - name: Deploy to groombook-dev
         env:
-          TAG: pr-${{ github.event.pull_request.number }}-${{ github.sha::7 }}
+          TAG: ${{ steps.version.outputs.tag }}
           PR_NUM: ${{ github.event.pull_request.number }}
         run: |
           echo "Deploying images tagged $TAG to groombook-dev..."