When synced with Outlook, if a user adds an event to the Odoo Calendar,
both Outlook and Odoo will send an invitation to attendees.
To reproduce the error:
(Need calendar)
1. Set up a mail catcher
2. Clean the calendar
3. Sync with Outlook
- [Steps](https://www.odoo.com/documentation/user/14.0/general/calendars/outlook/outlook_calendar.html)
4. In Calendar, create a new event
- Add some attendees
5. Save
=> The attendees will receive two invitations: one from Odoo and a
second from Outlook.
When synced, Odoo should not manage the emails sending.
OPW-2387296
closesodoo/odoo#63028
X-original-commit: 694452e5581aa28ae89024a6b5f70a273fb2bdf8
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>