[IMP] project: no open the user form view in project.task

Before this commit, the user can click on the user_id field in
project.task form view to see the user form view of the user linked in
the current task.

This commit adds an option (no_open=True) in this field to prevent the
user to access the user form view.

task-2440564

addons/project/views/project_views.xml

@@ -692,6 +692,8 @@
                             <field name="project_id" required="1" domain="[('active', '=', True), ('company_id', '=', company_id)]"/>
                             <field name="user_id"
                                 class="o_task_user_field"
+                                options="{'no_open': True}"
+                                widget="many2one_avatar_user"
                                 domain="[('share', '=', False)]"/>
                             <field
                                 name="parent_id"