fix(clients): include inboundsById in columns memo deps

Without it, the table's first paint captured an empty inboundsById and
rendered each attached inbound as #<id>. Once a sort/filter forced the
memo to rebuild it self-corrected, hence the visible flicker on reload.

frontend/src/pages/clients/ClientsPage.tsx

@@ -590,7 +590,7 @@ export default function ClientsPage() {
       }, 'expiryTime'),
     ];
     // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [t, togglingEmail, sortColumn, sortOrder, clientBucket, isOnline]);
+  }, [t, togglingEmail, sortColumn, sortOrder, clientBucket, isOnline, inboundsById]);
 
   const tablePagination = {
     current: currentPage,