Change required elements on page object view

The elements that were set to required can't be required because
due to the randomness of tests execution, sometimes a previous
test may change the issue filter, which might hide the elements.

In the other hand, the new required field should always be visible
after an issue is created.

qa/qa/page/project/issue/show.rb

@@ -15,12 +15,12 @@ module QA
           end
 
           view 'app/assets/javascripts/notes/components/comment_form.vue' do
-            element :comment_button, required: true
-            element :comment_input, required: true
+            element :comment_button
+            element :comment_input
           end
 
           view 'app/assets/javascripts/notes/components/discussion_filter.vue' do
-            element :discussion_filter
+            element :discussion_filter, required: true
             element :filter_options
           end