Since the `Many2OneAvatarField` field was rewritten in OWL component,
there is a newline between the image and the input.
We apply a `d-flex` on the parent to fix the problem.
Steps to reproduce:
* Go to Helpdesk
* Select a ticket
* The field `Assigned to` is on two line => BUG
X-original-commit: 1c88a43a4332ea4fa21ae2b04fdb8869300250d8
Part-of: odoo/odoo#101835
Romeo Fragomeli
077901cd3e