Retry dismiss callout

qa/qa/page/merge_request/show.rb

@@ -66,6 +66,7 @@ class Show < Page::Base
 
         def add_comment_to_diff(text)
           retry_on_exception(reload: true) do
+            Runtime::UserCalloutsHelper.dismiss_callout("tabs_position_highlight")
             finished_loading?
             wait(interval: 5) do
               has_text?("No newline at end of file")