fix(widgets): restore lucide-react and mantine-datatable dependencies

Beszel widgets import these packages directly but they were missing
from package.json while still listed in pnpm-lock.yaml, causing
frozen-lockfile Docker builds to fail.

packages/widgets/package.json

@@ -70,6 +70,8 @@
     "@tiptap/starter-kit": "catalog:",
     "clsx": "catalog:",
     "dayjs": "catalog:",
+    "lucide-react": "catalog:",
+    "mantine-datatable": "catalog:",
     "mantine-react-table": "catalog:",
     "next": "catalog:",
     "react": "catalog:",