[Glitch] Change home timeline to reload after follow recommendations in web UI

Port 0ad240cb6b to glitch-soc

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

app/javascript/flavours/glitch/reducers/timelines.js

@@ -9,6 +9,7 @@ import {
   TIMELINE_CONNECT,
   TIMELINE_DISCONNECT,
   TIMELINE_LOAD_PENDING,
+  TIMELINE_MARK_AS_PARTIAL,
 } from 'flavours/glitch/actions/timelines';
 import {
   ACCOUNT_BLOCK_SUCCESS,
@@ -173,6 +174,12 @@ export default function timelines(state = initialState, action) {
       initialTimeline,
       map => map.set('online', false).update(action.usePendingItems ? 'pendingItems' : 'items', items => items.first() ? items.unshift(null) : items),
     );
+  case TIMELINE_MARK_AS_PARTIAL:
+    return state.update(
+      action.timeline,
+      initialTimeline,
+      map => map.set('isPartial', true).set('items', ImmutableList()).set('pendingItems', ImmutableList()).set('unread', 0),
+    );
   default:
     return state;
   }