Update bench.yml

Author: sbryngelson

.github/workflows/bench.yml

@@ -1,6 +1,7 @@
 name: 'Benchmark'
 
-on: 
+on:
+  pull_request:
   pull_request_review:
     types: [submitted]
   workflow_dispatch:
@@ -23,7 +24,10 @@ jobs:
 
   self:
     name: Georgia Tech | Phoenix (NVHPC)
-    if: ${{ github.repository == 'MFlowCode/MFC' && needs.file-changes.outputs.checkall == 'true' && (github.event.review.state == 'approved' || github.event.pull_request.user.login == 'sbryngelson') }}
+    if: ${{ github.repository == 'MFlowCode/MFC' && needs.file-changes.outputs.checkall == 'true' && (
+             (github.event_name == 'pull_request_review' && github.event.review.state == 'approved') ||
+             (github.event_name == 'pull_request' && github.event.pull_request.user.login == 'sbryngelson')
+           ) }}    
     needs: file-changes
     strategy:
       matrix: