fix(frontend): keep entity and message deletes in sync

frontend/src/pages/EntitiesPage.tsx

@@ -37,7 +37,13 @@ export default function EntitiesPage() {
 
   const deleteMutation = useMutation({
     mutationFn: (id: string) => deleteEntity(id),
-    onSuccess: () => queryClient.invalidateQueries({ queryKey: ['entities'] }),
+    onSuccess: (_data, id) => {
+      queryClient.setQueryData(
+        ['entities'],
+        (currentEntities: Awaited<ReturnType<typeof getEntities>> | undefined) =>
+          currentEntities?.filter((entity) => entity.id !== id) ?? []
+      )
+    },
   })
 
   return (