[FIX] google_calendar: avoid cachemiss error when record has been deleted between write and patch

In some cases, the module can patch an event but if it is deleted, some write will fails.

This fix prevent the following traceback:

```py
Traceback (most recent call last):
  File "/home/odoo/src/odoo/15.0/odoo/fields.py", line 1057, in __get__
    value = env.cache.get(record, self)
  File "/home/odoo/src/odoo/15.0/odoo/api.py", line 889, in get
    raise CacheMiss(record, field)
odoo.exceptions.CacheMiss: 'calendar.event(30350266,).attendee_ids'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/odoo/src/odoo/15.0/odoo/api.py", line 886, in get
    return field_cache[record._ids[0]]
KeyError: 30350266

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/odoo/src/odoo/15.0/odoo/fields.py", line 1057, in __get__
    value = env.cache.get(record, self)
  File "/home/odoo/src/odoo/15.0/odoo/api.py", line 889, in get
    raise CacheMiss(record, field)
odoo.exceptions.CacheMiss: 'calendar.event(30350266,).show_as'

During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "/home/odoo/src/odoo/15.0/addons/google_calendar/models/google_sync.py", line 43, in called_after
    func(self.with_env(env), *args, **kwargs)
  File "/home/odoo/src/odoo/15.0/addons/google_calendar/models/google_sync.py", line 234, in _google_patch
    self.need_sync = False
  File "/home/odoo/src/odoo/15.0/odoo/fields.py", line 1217, in __set__
    records.write({self.name: write_value})
  File "/home/odoo/src/odoo/15.0/addons/google_calendar/models/calendar.py", line 55, in write
    res = super(Meeting, self.with_context(dont_notify=notify_context)).write(values)
  File "/home/odoo/src/odoo/15.0/addons/calendar/models/calendar_event.py", line 491, in write
    previous_attendees = self.attendee_ids
  File "/home/odoo/src/odoo/15.0/odoo/fields.py", line 3389, in __get__
    return super().__get__(records, owner)
  File "/home/odoo/src/odoo/15.0/odoo/fields.py", line 2603, in __get__
    return super().__get__(records, owner)
  File "/home/odoo/src/odoo/15.0/odoo/fields.py", line 1083, in __get__
    recs._fetch_field(self)
  File "/home/odoo/src/odoo/15.0/odoo/models.py", line 3276, in _fetch_field
    self._read(fnames)
  File "/home/odoo/src/odoo/15.0/odoo/models.py", line 3346, in _read
    self.check_access_rule('read')
  File "/home/odoo/src/odoo/15.0/odoo/models.py", line 3553, in check_access_rule
    invalid = self - self._filter_access_rules_python(operation)
  File "/home/odoo/src/odoo/15.0/odoo/models.py", line 3608, in _filter_access_rules_python
    return self.sudo().filtered_domain(dom or [])
  File "/home/odoo/src/odoo/15.0/odoo/models.py", line 5511, in filtered_domain
    data = rec.mapped(key)
  File "/home/odoo/src/odoo/15.0/odoo/models.py", line 5436, in mapped
    recs = recs._fields[name].mapped(recs)
  File "/home/odoo/src/odoo/15.0/odoo/fields.py", line 1176, in mapped
    self.__get__(first(remaining), type(remaining))
  File "/home/odoo/src/odoo/15.0/odoo/fields.py", line 1087, in __get__
    raise MissingError("\n".join([
odoo.exceptions.MissingError: Record does not exist or has been deleted.
(Record: calendar.event(30350266,), User: XXX)
```

X-original-commit: 2f0c9ca75de616da61e327259d03a8831b8e159b
Part-of: odoo/odoo#83040

addons/google_calendar/models/google_sync.py

@@ -237,7 +237,7 @@ class GoogleSync(models.AbstractModel):
                 except HTTPError as e:
                     if e.response.status_code in (400, 403):
                         self._google_error_handling(e)
-                self.need_sync = False
+                self.exists().with_context(dont_notify=True).need_sync = False
 
     @after_commit
     def _google_insert(self, google_service: GoogleCalendarService, values, timeout=TIMEOUT):
@@ -255,7 +255,7 @@ class GoogleSync(models.AbstractModel):
                 except HTTPError as e:
                     if e.response.status_code in (400, 403):
                         self._google_error_handling(e)
-                        self.need_sync = False
+                        self.with_context(dont_notify=True).need_sync = False
 
     def _get_records_to_sync(self, full_sync=False):
         """Return records that should be synced from Odoo to Google