Refactor Cache-Control and Vary definitions (#24347)

app/controllers/invites_controller.rb

@@ -7,6 +7,7 @@ class InvitesController < ApplicationController
 
   before_action :authenticate_user!
   before_action :set_body_classes
+  before_action :set_cache_headers
 
   def index
     authorize :invite, :create?
@@ -49,4 +50,8 @@ class InvitesController < ApplicationController
   def set_body_classes
     @body_classes = 'admin'
   end
+
+  def set_cache_headers
+    response.cache_control.replace(private: true, no_store: true)
+  end
 end