Blogs related assets items have strange margins between subtitles

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.3.X, Master
• Fix Version/s: 7.3.X, 7.4.13 DXP GA1, 7.4.3.4 CE GA4, Master
• Component/s: Blogs
• Labels: None
• Branch Version/s:
  7.3.x
• Backported to Branch:
  Committed
• Story Points: 1
• Fix Priority: 2
• Sprint: LIMA | QA Sprint 13
• Git Pull Request: https://github.com/liferay-lima/liferay-portal/pull/2260

Steps to reproduce

1. Go to menu > Content & Data > Blogs > New entry
2. Add some related assets (ex: another blog entry)
3. Check the related asset item

Expected result 

The related item doesn't have strange margins between list group subtitles.

Actual result

The related item has strange margins between list group subtitles.