Fix pipelines mini graph separator

Stanislav Lashmanovrequested to merge
slashmanov/fix-misplaced-pipelines-mini-graph-separator into master

What does this MR do and why?

This MR fixes pipelines mini graph separator placement: Downstream pipeline mini graph has incorrect st... (#528988 - closed).

Screenshots or screen recordings

Before After
image image

How to set up and validate locally

  1. Open any merge request with multiple downstream pipelines
  2. Select 'Pipelines' tab
  3. Observe that downstream pipelines have a separator in between them

Merge request reports