PRD-9471 Retry every pnpm/setup download once (#6517)

.github/workflows/release.yml

@@ -44,10 +44,37 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Setup pnpm
+      - name: Installing pnpm
+        id: pnpm-setup
         uses: pnpm/setup@84cb39b217b10273981911c288cd62326dc7c6d2 # v2.0.2
+        continue-on-error: true
+        timeout-minutes: 2
         with:
           install: false
+      - name: Waiting before retrying the pnpm download
+        if: steps.pnpm-setup.outcome == 'failure'
+        shell: bash
+        run: |
+          echo "::warning::pnpm-setup-retry=started. The first pnpm/setup attempt failed or hit its 2-minute bound; its error is in the Installing pnpm step. Retrying once in 20s."
+          sleep 20
+      - name: Installing pnpm (retry after a failed download)
+        id: pnpm-setup-retry
+        if: steps.pnpm-setup.outcome == 'failure'
+        uses: pnpm/setup@84cb39b217b10273981911c288cd62326dc7c6d2 # v2.0.2
+        timeout-minutes: 2
+        with:
+          install: false
+      - name: Recording the pnpm download retry result
+        if: ${{ !cancelled() && steps.pnpm-setup.outcome == 'failure' }}
+        shell: bash
+        env:
+          RETRY_OUTCOME: ${{ steps.pnpm-setup-retry.outcome }}
+        run: |
+          if [[ "$RETRY_OUTCOME" == success ]]; then
+            echo "::notice::pnpm-setup-retry=recovered. The first pnpm/setup attempt failed and the retry installed pnpm."
+          else
+            echo "::error::pnpm-setup-retry=exhausted retry=${RETRY_OUTCOME}. Both pnpm/setup attempts failed; their errors are in the two Installing pnpm steps."
+          fi
 
       - name: Setup Node for OIDC publishing
         uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6