[FIX] sale_project: editable views for action_view_task

Steps to reproduce
==================

- Install sale_project,industry_fsm,web_studio
- Open quotation S00023
- Click on the Tasks stat button
- Open studio
- Go to views
- Enable the gantt view

=> Unable to complete the operation: duplicate key value violates unique constraint "act_window_view_unique_mode_per_action"

Cause of the issue
==================

The [action record] already contains the gantt view, but it is replaced
inside the python [action].

In [previous] version, the user was entering this condition and thus had
no problem editing the views

Solution
========

Instead of replacing the entire action['views'], we can remap the view
ids to the ones we want.

One side effect of this though is that the `gantt,activity,map` views
will be available by default.

---

[action record]: https://github.com/odoo/enterprise/blob/1df090289f3c45c200d133734989a6d9a8073145/project_enterprise/views/project_task_views.xml#L227
[action]: https://github.com/odoo/odoo/blob/1a9302dc3a9b0d9323612c10e0f3a91300bb89fd/addons/sale_project/models/sale_order.py#L154
[previous]: https://github.com/odoo/odoo/blob/8dbcd3d955e7270fc26a6141e8fce751029e5a4b/addons/sale_project/models/sale_order.py#L133-L141

opw-3800071

closes odoo/odoo#163594

X-original-commit: e331798655f821b89c50a0f578dabeb6e03ecc78
Signed-off-by: Xavier Bol (xbo) <xbo@odoo.com>
Signed-off-by: Hubert Van De Walle <huvw@odoo.com>

addons/sale_project/models/sale_order.py

@@ -150,7 +150,13 @@ class SaleOrder(models.Model):
 
         action = self.env["ir.actions.actions"]._for_xml_id("project.action_view_task")
         if self.tasks_count > 1:  # cross project kanban task
-            action['views'] = [[kanban_view_id, 'kanban'], [list_view_id, 'tree'], [form_view_id, 'form'], [False, 'graph'], [False, 'calendar'], [False, 'pivot']]
+            for idx, (view_id, view_type) in enumerate(action['views']):
+                if view_type == 'kanban':
+                    action['views'][idx] = (kanban_view_id, 'kanban')
+                elif view_type == 'tree':
+                    action['views'][idx] = (list_view_id, 'tree')
+                elif view_type == 'form':
+                    action['views'][idx] = (form_view_id, 'form')
         else:  # 1 or 0 tasks -> form view
             action['views'] = [(form_view_id, 'form')]
             action['res_id'] = self.tasks_ids.id