Maintain some feed data to avoid needless glimmers (#2054)

src/state/queries/util.ts

@@ -0,0 +1,17 @@
+import {QueryClient, QueryKey, InfiniteData} from '@tanstack/react-query'
+
+export function truncateAndInvalidate<T = any>(
+  queryClient: QueryClient,
+  querykey: QueryKey,
+) {
+  queryClient.setQueryData<InfiniteData<T>>(querykey, data => {
+    if (data) {
+      return {
+        pageParams: data.pageParams.slice(0, 1),
+        pages: data.pages.slice(0, 1),
+      }
+    }
+    return data
+  })
+  queryClient.invalidateQueries({queryKey: querykey})
+}