Call @order_cycles.count instead of #size because TagRuleApplicator doesn't return Relation anymore

In March 2020 this was changed to use :size instead of :count because TagRuleApplicator returned an ActiveRecord::Relation, see:

d2eee1dafd

However in October 2020 TagRuleApplicator was changed to always return an Array so this is no longer needed, see:

7e606471e4

app/controllers/base_controller.rb

@@ -22,12 +22,8 @@ class BaseController < ApplicationController
   end
 
   # Default to the only order cycle if there's only one
-  #
-  # Here we need to use @order_cycles.size not @order_cycles.count
-  #   because OrderCyclesList returns a modified ActiveRecord::Relation
-  #     and these modifications are not seen if it is reloaded with count
   def set_order_cycle
-    return if @order_cycles.size != 1
+    return if @order_cycles.count != 1
 
     current_order(true).set_order_cycle! @order_cycles.first
   end