Move recommended index partial to a component

Thanks to it, we can slightly simplify the debates view rendering it.

app/components/shared/recommended_index_component.rb

@@ -0,0 +1,14 @@
+class Shared::RecommendedIndexComponent < ApplicationComponent
+  attr_reader :recommended, :disable_recommendations_path, :namespace
+  use_helpers :recommended_path, :current_path_with_query_params
+
+  def initialize(recommended, disable_recommendations_path:, namespace:)
+    @recommended = recommended
+    @disable_recommendations_path = disable_recommendations_path
+    @namespace = namespace
+  end
+
+  def render?
+    feature?("user.recommendations") && recommended.present?
+  end
+end