Keep notification when muting_notifications is true (#7311)

* Keep notification when muting_notifications is true

* Retrun mute object

* Fix test

app/javascript/mastodon/reducers/notifications.js

@@ -105,7 +105,7 @@ export default function notifications(state = initialState, action) {
     return expandNormalizedNotifications(state, action.notifications, action.next);
   case ACCOUNT_BLOCK_SUCCESS:
   case ACCOUNT_MUTE_SUCCESS:
-    return filterNotifications(state, action.relationship);
+    return action.relationship.muting_notifications ? filterNotifications(state, action.relationship) : state;
   case NOTIFICATIONS_CLEAR:
     return state.set('items', ImmutableList()).set('hasMore', false);
   case TIMELINE_DELETE:

app/models/concerns/account_interactions.rb

@@ -93,6 +93,7 @@ module AccountInteractions
     if mute.hide_notifications? != notifications
       mute.update!(hide_notifications: notifications)
     end
+    mute
   end
 
   def mute_conversation!(conversation)

app/services/mute_service.rb

@@ -3,9 +3,13 @@
 class MuteService < BaseService
   def call(account, target_account, notifications: nil)
     return if account.id == target_account.id
-    FeedManager.instance.clear_from_timeline(account, target_account)
+
     mute = account.mute!(target_account, notifications: notifications)
-    BlockWorker.perform_async(account.id, target_account.id)
+    if mute.hide_notifications?
+      BlockWorker.perform_async(account.id, target_account.id)
+    else
+      FeedManager.instance.clear_from_timeline(account, target_account)
+    end
     mute
   end
 end