- Create a sales order for a company with a contact name.
- Click the Preview button.
- The company and contact names appear on the same line, only separated by a
comma.

Before this commit:

it's not possible to easily override this behavior.

After this commit:

it's possible to override `Partner._get_contact_name` to change the format of
contact name.

Beware that this method is used in `_get_name` which is called from various
places. A check on the context may be necessary.

closes odoo/odoo#38712

Opw: 2077294
X-original-commit: 0b8f3f93a2cb05cc9c940964fe80acd23b86b8a0
Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>