[stable24] fix(caldav): Fix reminder timezone drift for all-day events

[backportbot-nextcloud]

• ⚠️ This backport had conflicts and is incomplete

backport of #36192

[blizzz]

moving to 24.0.11. also, conflicts.

[MichaIng]

/rebase

[MichaIng]

Conflict solved.

					'id' => $reminder['object_id'],
				], $reminder['event_hash'], $alarmHash, true, false);
-				], $reminder['event_hash'], $alarmHash, true, false);
+				], $calendarTimeZone, $reminder['event_hash'], $alarmHash, true, false);
				$this->writeRemindersToDatabase($alarms);

Was not done automatically due to changed indentation.