Fix electron types update command in CI (#5337)

Use --workspace-root flag to install at workspace level

Author: webfiltered

.github/workflows/update-electron-types.yaml

@@ -35,7 +35,7 @@ jobs:
             electron-types-tools-cache-${{ runner.os }}-
 
       - name: Update electron types
-        run: pnpm install @comfyorg/comfyui-electron-types@latest
+        run: pnpm install --workspace-root @comfyorg/comfyui-electron-types@latest
 
       - name: Get new version
         id: get-version