[FIX] project - send rating mail by project

opws: 2269230, 2248760
When a database has a lot of projects with many tasks, and needs
to send a lot of feedback mails, the cron tries to send mails to
all tasks at the same time, thus it times out.

This fix will allow to treat projects one at a time so that when
the cron times out, it will not restart from the beginning.

closes odoo/odoo#53922

X-original-commit: 07c828b48741500573b4286480b23752a28163c7
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>

addons/project/models/project.py

@@ -483,8 +483,10 @@ class Project(models.Model):
     @api.model
     def _send_rating_all(self):
         projects = self.search([('rating_status', '=', 'periodic'), ('rating_request_deadline', '<=', fields.Datetime.now())])
-        projects.mapped('task_ids')._send_task_rating_mail()
-        projects._compute_rating_request_deadline()
+        for project in projects:
+            project.task_ids._send_task_rating_mail()
+            project._compute_rating_request_deadline()
+            self.env.cr.commit()
 
 
 class Task(models.Model):