Purpose
=======
When this option is enabled, the button to create new properties
is invisible. We create a client action instead, and when the user
executes client action for the first time, the button becomes visible
until the user refreshes the page.
This is useful because most of the time, the user will create the
properties and then won't change them. So this button uses space
unnecessarily in the form view (for the most of the use cases).
Task-3188915
Part-of: odoo/odoo#119811
std-odoo
1f80810e39