browser_ui/4_verify/new_discussion_not_dropping_merge_trains_mr_spec.rb | Verify In merge trains new thread discussion does not drop MR

E2E test scenario for Merge request on a merge train should not be dropped due to new comment/thread

Steps

1. Log into GitLab
2. Create new project, setup runner
3. Enable merge train and also enable option merge if all discussions are resolved
4. Commit a CI file
5. Push new MR to project and visit it
6. On the merge request page, wait for first pipeline to finish then click Start Merge Train
7. Wait for system note indicate merge trains has started
8. Now start a thread on the MR
9. Verify that MR is still in merge train (MR is merged successfully).