Refactor Cache-Control and Vary definitions (#24347)

app/controllers/disputes/base_controller.rb

@@ -9,10 +9,15 @@ class Disputes::BaseController < ApplicationController
 
   before_action :set_body_classes
   before_action :authenticate_user!
+  before_action :set_cache_headers
 
   private
 
   def set_body_classes
     @body_classes = 'admin'
   end
+
+  def set_cache_headers
+    response.cache_control.replace(private: true, no_store: true)
+  end
 end