p_auth token is missing from layout update at manage layout templates page

• Type: Regression Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 6.0.12 EE, 6.0.X EE
• Fix Version/s: 6.0.X EE
• Component/s: Accessibility, Security Vulnerability
• Labels:
  • QA-R
  • QA-TP
  • ee-ts
  • eu-support
• Branch Version/s:
  6.0.x
• Backported to Branch:
  Committed
• Story Points: 2

Reprodution:

1. Go to Manage -> Page layout
2. Select an other layout.
3. Save.

Result: Changes aren't saved.

Root cause:
Action in manage templates page misses p_auth parameter which is required becase backport of LPS-27174.