[BUG] The due date can be updated even when the task is not assigned to the user performing the action

• Type: Technical Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: Master
• Component/s: Workflow
• Labels: None
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/86264

Current issue: The due date can be updated even when the task is not assigned to the user performing the action

Steps to reproduce:

1. Associate Single Approver with Blogs Entry
2. Create 1 blog entry
3. Create a new user (user1)
4. Assign the task to user1
5. Go to CP > Metrics > Single Approver Metrics > Click on the Pending Items number
6. Update the due date of the blog entry
7. Go to CP > Workflow > Submissions 
8. Click on the blog entry > Activities

Actual result: The description says that user1 updated the due date of the task, but the user Test Test did it.

Expected result: The due date should be updated only by the task assignee, being consistent with My Workflow Tasks

Environment:
master DXP: e4a53ddeb19c1c6dd2c3b896630df75b4613c8f8