Before this commit, this route displayed the portal form view of the
project. This view does not seem useful for the external user and prefer
directly see the tasks of this project.
This commit replaces the portal form view of the project by the tasks
list containing in the project. Moreover, another route has been added
to allow the external user to go to the portal form view of the task
selected in ths list.
This route is called '/my/project/<project_id>/task/<task_id>'.
We decide to replace the content of the route because we want to allow
the public user to access to the tasks list of the project with the
access_token of the project. Also, with this same token, the public
could access to the form view of the selected task and send a message if
he needs.
task-2379518
closes#73341