chore(ci): fix perpetual generate workflow

.github/workflows/generate_on_pr.yaml

@@ -9,11 +9,34 @@ on:
     - synchronize
 
 jobs:
+  should-generate:
+    permissions:
+      contents: read
+    runs-on:
+      - ubuntu-latest
+    outputs:
+      result: ${{ steps.decision.outputs.result }}
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.ref }}
+          token: ${{ secrets.PAT }}
+      - id: decision
+        run: |
+            if [[ "$(git show -s --format=%B HEAD)" == "Update provider based on openapi.yaml changes" ]]; then
+              echo "result=false" >> "$GITHUB_OUTPUT"
+            else
+              echo "result=true" >> "$GITHUB_OUTPUT"
+            fi
+
   generate:
+    needs:
+    - should-generate
     permissions:
       contents: write
     runs-on:
       - ubuntu-latest
+    if: needs.should-generate.outputs.result == 'true'
     steps:
       - name: Install Speakeasy
         uses: mheap/setup-go-cli@v1
@@ -28,6 +51,8 @@ jobs:
         with:
           ref: ${{ github.event.pull_request.head.ref }}
           token: ${{ secrets.PAT }}
+          # NOTE: no PAT as that would cause perpertual loop of commits to a PR.
+          # Unless we figure out how to detect 
 
       - name: Configure speakeasy CLI
         run: |