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

app/views/debates/index.html.erb

@@ -18,9 +18,7 @@
   <%= render "shared/section_header", i18n_namespace: "debates.index.section_header", image: "debates" %>
 <% end %>
 
-<%= render Shared::RecommendedIndexComponent.new(@recommended_debates,
-                                                 disable_recommendations_path: recommendations_disable_debates_path,
-                                                 namespace: "debates") %>
+<%= render Shared::RecommendedIndexComponent.new(@recommended_debates, namespace: "debates") %>
 
 <div class="row">
   <div id="debates" class="debates-list small-12 medium-9 column">

app/views/proposals/index.html.erb

@@ -25,9 +25,7 @@
 <% end %>
 
 <% if show_recommended_proposals? %>
-  <%= render Shared::RecommendedIndexComponent.new(@recommended_proposals,
-                                                   disable_recommendations_path: recommendations_disable_proposals_path,
-                                                   namespace: "proposals") %>
+  <%= render Shared::RecommendedIndexComponent.new(@recommended_proposals, namespace: "proposals") %>
 <% end %>
 
 <div class="row">