feat: move scheme alphabeticising into manager

app/controllers/organisations_controller.rb

@@ -23,7 +23,7 @@ class OrganisationsController < ApplicationController
   def schemes
     organisation_schemes = Scheme.where(owning_organisation: [@organisation] + @organisation.parent_organisations)
 
-    @pagy, @schemes = pagy(filter_manager.filtered_schemes(organisation_schemes, search_term, session_filters).order_by_service_name)
+    @pagy, @schemes = pagy(filter_manager.filtered_schemes(organisation_schemes, search_term, session_filters))
     @searched = search_term.presence
     @total_count = organisation_schemes.size
     @filter_type = "schemes"

app/controllers/schemes_controller.rb

@@ -15,7 +15,7 @@ class SchemesController < ApplicationController
     redirect_to schemes_organisation_path(current_user.organisation) unless current_user.support?
     all_schemes = Scheme.all
 
-    @pagy, @schemes = pagy(filter_manager.filtered_schemes(all_schemes, search_term, session_filters).order_by_service_name)
+    @pagy, @schemes = pagy(filter_manager.filtered_schemes(all_schemes, search_term, session_filters))
     @searched = search_term.presence
     @total_count = all_schemes.size
     @filter_type = "schemes"

app/services/filter_manager.rb

@@ -59,7 +59,7 @@ class FilterManager
 
       schemes = schemes.public_send("filter_by_#{category}", values, user)
     end
-    schemes
+    schemes.order_by_service_name
   end
 
   def self.filter_locations(locations, search_term, filters, user)