DEV: Fix order: filter not working on /filter route (#21330)

`TopicQuery#latest_results` which was being used by
`TopicQuery#list_filter` defaults to ordering by `Topic#bumped_at` in
descending order and that was taking precedent over the order scopes
being applied by `TopicsFilter`.

lib/topic_query.rb

@@ -270,7 +270,10 @@ class TopicQuery
 
   def list_filter
     topics_filter =
-      TopicsFilter.new(guardian: @guardian, scope: latest_results(include_muted: false))
+      TopicsFilter.new(
+        guardian: @guardian,
+        scope: latest_results(include_muted: false, skip_ordering: true),
+      )
 
     results = topics_filter.filter_from_query_string(@options[:q])
 
@@ -278,6 +281,8 @@ class TopicQuery
       results = remove_muted_topics(results, @user)
     end
 
+    results = apply_ordering(results) if results.order_values.empty?
+
     create_list(:filter, {}, results)
   end
 
@@ -618,7 +623,7 @@ class TopicQuery
     result.where("topics.category_id != ?", drafts_category_id)
   end
 
-  def apply_ordering(result, options)
+  def apply_ordering(result, options = {})
     sort_column = SORTABLE_MAPPING[options[:order]] || "default"
     sort_dir = (options[:ascending] == "true") ? "ASC" : "DESC"
 
@@ -732,7 +737,7 @@ class TopicQuery
       result = filter_by_tags(result)
     end
 
-    result = apply_ordering(result, options)
+    result = apply_ordering(result, options) if !options[:skip_ordering]
 
     all_listable_topics =
       @guardian.filter_allowed_categories(