Knowledge Base Article workflow screen is not showing attachment

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.0.X, 7.1.X, Master
• Component/s: Knowledge Base widget
• Labels:
  • ee-ts
• Branch Version/s:
  7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Story Points: 0.25
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/62095

Steps To Reproduce:

1. Login as Admin User
   2. Apply workflow to Knowledge Base Article. Follow below steps to apply workflow
   . Go to Control Paneel -> Configuration -> Workflow Configuration
   . Click Edit on "Knowledge Base Article" section
   . Select "Single Approver" as workflow.
   . Save it.
   3. Now Go to Liferay Dxp Site home page
   4. Go to Liferay DXP -> Content -> Knowledge Base
   5. Add one new article with one single attachment.
   6. Click on "Submit for Publication" button.
   7. Now check your notification. You will get notification of this knowledge base article.
   8. Click on Notification title.
   9. Go to "Preview of Knowledge Base Article" section Click on View icon in it.
   10. No attachment(Which was added in article) is available here.

Actual Behavior: Attachment is not available even after clicking on view icon, only the content is viewable.

Expected Behavior: attachment should get displayed after clicking on view icon.

Result on 7.0.X: Reproduced : 8fbbbff96a02383c6b28c776b146dc3fe1bdbf5a
Result on Master: Reproduced : 66a9e816755c22a3f24b099b9316f084b99a6f70
Result on 7.1.X: Reproduced : 2ff8f3584dab3c36bc17eedc4e11ff32a810b1d6