Reduce account overfetching when displaying collection lists (#39220)

app/javascript/mastodon/actions/accounts_typed.ts

@@ -3,6 +3,7 @@ import { createAction } from '@reduxjs/toolkit';
 import {
   apiRemoveAccountFromFollowers,
   apiGetEndorsedAccounts,
+  apiGetAccounts,
 } from 'mastodon/api/accounts';
 import type { ApiRelationshipJSON } from 'mastodon/api_types/relationships';
 import { createDataLoadingThunk } from 'mastodon/store/typed_functions';
@@ -113,3 +114,12 @@ export const fetchEndorsedAccounts = createDataLoadingThunk(
     return data;
   },
 );
+
+export const fetchAccounts = createDataLoadingThunk(
+  'accounts/multi_accounts',
+  ({ accountIds }: { accountIds: string[] }) => apiGetAccounts(accountIds),
+  (data, { dispatch }) => {
+    dispatch(importFetchedAccounts(data));
+    return data;
+  },
+);