Simplify recommended index component parameters

We can get the path if we know the namespace, so we don't need to pass
both of them.

app/components/shared/recommended_index_component.rb

@@ -1,14 +1,23 @@
 class Shared::RecommendedIndexComponent < ApplicationComponent
-  attr_reader :recommendations, :disable_recommendations_path, :namespace
+  attr_reader :recommendations, :namespace
   use_helpers :current_path_with_query_params
 
-  def initialize(recommendations, disable_recommendations_path:, namespace:)
+  def initialize(recommendations, namespace:)
     @recommendations = recommendations
-    @disable_recommendations_path = disable_recommendations_path
     @namespace = namespace
   end
 
   def render?
     feature?("user.recommendations") && recommendations.present?
   end
+
+  private
+
+    def disable_recommendations_path
+      if namespace == "debates"
+        recommendations_disable_debates_path
+      else
+        recommendations_disable_proposals_path
+      end
+    end
 end