fix: run build command before packaging

Author: L-a-r-t

Diff for: .github/workflows/submit.yml

@@ -24,6 +24,7 @@ jobs:
           node-version: 16.x
           cache: "pnpm"
       - name: Build and zip extension artifact
+        run: pnpm build
         run: pnpm package
       - name: Browser Platform Publish
         uses: PlasmoHQ/bpp@v3