[FIX] project: incorrect creation of recurring tasks

In case X several recurrences are processed in the same cron execution,
only the last recurring task was created X times, while the other tasks
were not created. There is also a missing id preventing a correct use of
the default stage for the new created task.

closes odoo/odoo#70784

X-original-commit: 5ea2fcbecf572be24af9b2aac76de9e5d5709d2c
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>
Signed-off-by: Alex Tuyls <alt-odoo@users.noreply.github.com>

addons/project/models/project_task_recurrence.py

@@ -221,7 +221,7 @@ class ProjectTaskRecurrence(models.Model):
                 children = []
                 # copy the subtasks of the original task
                 for child in task.child_ids:
-                    child_values = self._new_task_values(child)
+                    child_values = recurrence._new_task_values(child)
                     child_values['parent_id'] = new_task.id
                     children.append(child_values)
                 self.env['project.task'].create(children)