UI: Adding multiple components to a journey puts them in a pile that looks like one component

[aarthy-dk]

Steps to reproduce

• Create several components.
• Create a journey and add multiple components at the same time to the DAG.
• The components get added to the DAG, but they look like a single component because the others are hidden behind it.

Expected behavior

All the added components should be visible on the journey DAG.

Impact

Users cannot see all their journey components and do not realize there are more than what is visible.