Allow access to shared caldav trash bin items

[ChristophWurst]

Is your feature request related to a problem? Please describe.

With #26083 Nextcloud received a trash bin for caldav calendars and its objects (events). For the first iteration we didn't fully go into all possible scenarios and so shared calendars and shared events that are in the trash bin won't show up for the sharee. We can possibly say that a deleted calendar should be invisible for the sharee, but for deleted events it's very useful for a sharee to be able to restore, especially if they deleted a event themselves.

Describe the solution you'd like

The REPORT logic \OCA\DAV\CalDAV\Trashbin\DeletedCalendarObjectsCollection::calendarQuery should extend the scope of what a user can see by factoring in sharing information.

Describe alternatives you've considered

N/a

Additional context

The original feature request #1662