build(ui): downgrade idb-keyval

We have increased error rates after updating this package. Let's try
downgrading to see if that fixes the issue.

Author: psychedelicious

invokeai/frontend/web/package.json

@@ -63,7 +63,7 @@
     "framer-motion": "^11.10.0",
     "i18next": "^25.2.1",
     "i18next-http-backend": "^3.0.2",
-    "idb-keyval": "^6.2.2",
+    "idb-keyval": "6.2.1",
     "jsondiffpatch": "^0.7.3",
     "konva": "^9.3.20",
     "linkify-react": "^4.3.1",