[Glitch] fix: Update hashtags when (un)following a hashtag

Port b9b1500fc5 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/actions/tags_typed.ts

@@ -1,12 +1,30 @@
+import { createAction } from '@reduxjs/toolkit';
+
 import {
   apiGetTag,
   apiFollowTag,
   apiUnfollowTag,
   apiFeatureTag,
   apiUnfeatureTag,
+  apiGetFollowedTags,
 } from 'flavours/glitch/api/tags';
 import { createDataLoadingThunk } from 'flavours/glitch/store/typed_functions';
 
+export const fetchFollowedHashtags = createDataLoadingThunk(
+  'tags/fetch-followed',
+  async ({ next }: { next?: string } = {}) => {
+    const response = await apiGetFollowedTags(next);
+    return {
+      ...response,
+      replace: !next,
+    };
+  },
+);
+
+export const markFollowedHashtagsStale = createAction(
+  'tags/mark-followed-stale',
+);
+
 export const fetchHashtag = createDataLoadingThunk(
   'tags/fetch',
   ({ tagId }: { tagId: string }) => apiGetTag(tagId),
@@ -15,6 +33,9 @@ export const fetchHashtag = createDataLoadingThunk(
 export const followHashtag = createDataLoadingThunk(
   'tags/follow',
   ({ tagId }: { tagId: string }) => apiFollowTag(tagId),
+  (_, { dispatch }) => {
+    void dispatch(markFollowedHashtagsStale());
+  },
 );
 
 export const unfollowHashtag = createDataLoadingThunk(