Show mastodon on modal (#6129)

app/controllers/authorize_follows_controller.rb

@@ -4,6 +4,7 @@ class AuthorizeFollowsController < ApplicationController
   layout 'modal'
 
   before_action :authenticate_user!
+  before_action :set_body_classes
 
   def show
     @account = located_account || render(:error)
@@ -58,4 +59,8 @@ class AuthorizeFollowsController < ApplicationController
   def acct_params
     params.fetch(:acct, '')
   end
+
+  def set_body_classes
+    @body_classes = 'modal-layout'
+  end
 end