Grouped Notifications UI (#30440)

Co-authored-by: Eugen Rochko <eugen@zeonfederated.com>
Co-authored-by: Claire <claire.github-309c@sitedethib.com>

package.json

@@ -123,6 +123,7 @@
     "tesseract.js": "^2.1.5",
     "tiny-queue": "^0.2.1",
     "twitter-text": "3.1.0",
+    "use-debounce": "^10.0.0",
     "webpack": "^4.47.0",
     "webpack-assets-manifest": "^4.0.6",
     "webpack-bundle-analyzer": "^4.8.0",