[17.0][IMP] Correct team activities domain

[vung-labiso]

User Story

• As a team member using Odoo, I want to be able to view all activities assigned to my team when I click on the "Team Activities" tab in the user menu (Clock-symbol), so that I can efficiently manage and track team tasks.

Scope

• The scope of this task is to fix the OCA module mail_activity_teams.
• Currently, when a user selects an object (e.g., Contacts) in the "Team Activities" tab, it shows an empty search result.
• This is due to an incorrect domain being applied, which filters by Activity User instead of Team.
• The fix should involve correcting the domain to filter by Team instead of User.

Acceptance Criteria

• Selecting an object (e.g., Contacts) in the "Team Activities" tab should display all team activities related to that object.
• The domain used for filtering activities should be based on the team, not the individual user.
• The fix should work consistently across different object types (Contacts, Sales, etc.).