[FIX] microsoft_calendar: avoid deadlock at token refresh

We should rollback manually first to avoid concurrent access errors/deadlocks when
trying to refresh microsoft calendar token.

opw-2630601

closes odoo/odoo#77955

X-original-commit: 5cd27e3440efae06bee6a96aee39f4d2c509ede7
Signed-off-by: Arnaud Joset <arj-odoo@users.noreply.github.com>
Signed-off-by: Alex Tuyls <alt-odoo@users.noreply.github.com>

addons/microsoft_calendar/models/res_users.py

@@ -66,13 +66,14 @@ class User(models.Model):
                 'microsoft_calendar_token_validity': fields.Datetime.now() + timedelta(seconds=ttl),
             })
         except requests.HTTPError as error:
-            if error.response.status_code in (400, 401):  # invalid grant
+            if error.response.status_code in (400, 401):  # invalid grant or invalid client
                 # Delete refresh token and make sure it's commited
                 self.env.cr.rollback()
                 self.write({
                     'microsoft_calendar_rtoken': False,
                     'microsoft_calendar_token': False,
                     'microsoft_calendar_token_validity': False,
+                    'microsoft_calendar_sync_token': False,
                 })
                 self.env.cr.commit()
             error_key = error.response.json().get("error", "nc")