[FIX] calendar: browse record using IrRules

Install CRM (we need the "Hide Private Message" record rule defined by
that module), create a meeting as of today, set a reminder of one day,
invite another user (Demo) as attendee, save. Edit, go to the options,
change the "Show time as" to "free", save => access error due to the
said record rule.

Using a search instead of browse ensures record unavailable due to a
record rule are filtered.

Same as 54e970e

opw-1974599

closes odoo/odoo#32987

Signed-off-by: Julien Castiaux <Julien00859@users.noreply.github.com>

addons/calendar/models/calendar.py

@@ -409,9 +409,8 @@ class AlarmManager(models.AbstractModel):
 
         all_meetings = self.get_next_potential_limit_alarm('notification', partner_id=partner.id)
         time_limit = 3600 * 24  # return alarms of the next 24 hours
-        for event_id in all_meetings:
-            max_delta = all_meetings[event_id]['max_duration']
-            meeting = self.env['calendar.event'].browse(event_id)
+        for meeting in self.env['calendar.event'].search([('id', 'in', list(all_meetings))]):  # cannot browse
+            max_delta = all_meetings[meeting.id]['max_duration']
             if meeting.recurrency:
                 b_found = False
                 last_found = False