feat(icon-app): make app work again and deploy demo on PR builds (#873)

Author: Hotell

.github/CODEOWNERS

@@ -1,5 +1,5 @@
 ## packages
-packages/icon-app @tomi-msft
+packages/icon-app @microsoft/cxe-prg
 packages/react-icons @microsoft/cxe-prg @microsoft/cxe-red
 packages/react-icons-font-subsetting-plugin @tomi-msft @MLoughry
 packages/svg-icons @tomi-msft

.github/workflows/pr.yml

@@ -176,3 +176,15 @@ jobs:
       run: |
         npm run test
       working-directory: packages/react-icons-font-subsetting-webpack-plugin
+
+    - name: React Icons App - Deploy
+      run: |
+        time npm run build
+      working-directory: packages/icon-app
+
+    - name: Upload build artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: icon-app-build
+        path: packages/icon-app/dist/
+        retention-days: 7