fix: place --if-present before script name for pnpm

Author: h13

.github/workflows/ci-node.yml

@@ -25,6 +25,6 @@ jobs:
           cache: pnpm
 
       - run: pnpm install --frozen-lockfile
-      - run: pnpm run build --if-present
+      - run: pnpm run --if-present build
       - run: pnpm run lint
       - run: pnpm test