Merge branch 'qa-shl-fix-transfer-project-spec' into 'master'

Stablize transfer project spec by waiting for confirm button enabled

Closes #218302

See merge request gitlab-org/gitlab!39324

qa/qa/page/component/confirm_modal.rb

@@ -20,7 +20,14 @@ module QA
           fill_element :confirm_input, text
         end
 
-        def click_confirm_button
+        def wait_for_confirm_button_enabled
+          wait_until(reload: false) do
+            !find_element(:confirm_button).disabled?
+          end
+        end
+
+        def confirm_transfer
+          wait_for_confirm_button_enabled
           click_element :confirm_button
         end
       end

qa/qa/page/project/settings/advanced.rb

@@ -54,7 +54,7 @@ module QA
 
             click_element(:transfer_button)
             fill_confirmation_text(project_name)
-            click_confirm_button
+            confirm_transfer
           end
 
           def click_export_project_link