Birthday without birthyear

[tobiasKaminsky]

Some apps, e.g. contacts on samsung allow to store the birthday without birthyear (in case you do not know how old somebody is).
These contacts are synced fine to NC, but the dates are not shown in the birthday calendar.
Those dates should be shown, e.g. with in a given date range (1970-2030).

[georgehrke]

I'm surprised they are synced fine: nextcloud/server#4287

Contacts Birthday calendar is generated in the server (dav app), so please open a ticket there. :)