Export Bluesky, Fediverse, and IMPP to system contacts

Describe the bug

I use the internal Contact "/remote.php/dav/addressbooks/users/*/z-server-generated--system/"

The Keywords here is set in "/index.php/settings/user"

I want set IMPP:xmpp item, but no this blank.

Steps to reproduce

Go to "/index.php/settings/user"

See error: no blanks can set own xmpp

Try to install profile_fields, can add to "/index.php/settings/user", but contacts no xmpp

Remove profile_fields, trying but still anavailable.

Expected behavior

Add the blank of IMPP(xmpp,AIM,Matrix,etc.) in "/index.php/settings/user"

Add the item that make IMPP available in Contacts.

Actual behavior

I can set IMPP in /index.php/settings/user and when I use CardDAV they can display in the system contacts.

Contact version

No response

Operating system

No response

PHP engine version

None

Web server

None

Database

None

Additional info

No response