This fixes an issue where icons for Gantt and Grid views were available but not shown on screen. Users will now see the expected visual indicators, making these views clearer and easier to use.

Gantt and Grid views icons were included in the bundle but not called
during the rendering.

Subtask assignee lists now exclude portal users, preventing external users from being assigned work they should not own. This keeps project and field service task assignments limited to internal users and avoids accidental access or workflow confusion.

Steps :
Go to a Task > Sub-Tasks > Assignee

Issue :
You can assign a portal user

Fix :
Add ('share', '=', False) to user_ids domain

opw: 2759085
Related PR: https://github.com/odoo/odoo/pull/84166