empty content for recipient info on composer should be centered

[GretaD]

Steps to reproduce

1. Go to mail app and click new message
2. Add an email that is not on your contacts
3. See the empty content showing on the right

Expected behavior

nice design

Actual behavior

Mail app version

No response

Nextcloud version

No response

Mailserver or service

No response

Operating system

No response

PHP engine version

None

Nextcloud memory caching

No response

Web server

None

Database

None

Additional info

No response