Move PR canary dry run off verify critical path

.github/workflows/pr.yml

@@ -88,6 +88,30 @@ jobs:
       - name: Build
         run: pnpm build
 
+  canary_dry_run:
+    name: Canary Dry Run
+    needs: [policy]
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 9.15.4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 24
+          cache: pnpm
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
       - name: Release canary dry run
         run: |
           git checkout -B master HEAD