Prevent users from share links with write permissions

Hello!
How to prevent users creating shared links with write permissions, except “File drops (upload only)”?
perm

As far as I remember you can customize the default share settings for all users under Administration>Share. Have you checked that?

Yes, I checked. This is not what I need.
I need that users can create external links with access only to upload. And they could not create external links with full access or download.