Unprivileged user cannot connect to wifi without administrator password

### What Happened?

Currently, only admin users can connect to wifi. Unprivileged users will be asked for the admin password.

### Steps to Reproduce

1. After installing and updating the system, add a new standard user without administration privileges.
2. Login as that user, and try to connect to any wifi network for the first time.
> A password prompt for the administrator user will pop up.
> After providing the password, it won't ask for it again.

### Expected Behavior

This happens because the option "all users may connect to this network", from nm-connection-editor, is enabled by default.


I propose we disable it by default, to effectively make all connections per-user.

### OS Version

7.x (Horus)

### Software Version

Latest release (I have run all updates)

### Log Output

_No response_

### Hardware Info

elementary 7.1
Dell Inspiron 15 3583
Fresh install. Sideloading from Flathub.
I'm the admin user. I share my laptop with an unprivileged user.