DM is marked for deletion instead of update on simple publication screen

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.1.0 M2, 7.1.X, Master
• Component/s: Staging, ~[Archived] WCM
• Labels: None
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/56438

To reproduce:
1. enable local staging for a site
2. create a web content structure for the site, structure to contain one image field
3. create web content based off the created site structure, upload an image, leave not mandatory description field blank
4. publish site to live, observe single publication screen

Actual result:
1 deletion is displayed for DM on the single publication screen

Expected:
Update to be displayed

Tested on master a64572ae