fix: Build error caused by [email protected]

Limit react-focus-on's version to `<3.10.0`, as that minor version seems to be
a little risky.  See:

theKashey/react-focus-on#111

Author: arbrandes

package-lock.json

@@ -102,7 +102,7 @@
     "postcss-rtlcss": "^5.5.0",
     "prop-types": "^15.8.1",
     "react-dev-utils": "12.0.1",
-    "react-focus-on": "^3.9.4",
+    "react-focus-on": "<3.10.0",
     "react-intl": "^6.6.6",
     "react-refresh": "0.16.0",
     "react-refresh-typescript": "^2.0.9",