FR: Enable autorefresh in .repo file

### What are you trying to do?

Install Tailscale on OpenSUSE, and update it

### How should we solve this?

Set autorefresh=1 in the repo file

### What is the impact of not solving this?

The user needs to either enable autorefresh themselves after the installation, or run zypper ref manually each time they update

### Anything else?

_No response_

Locate the OpenSUSE .repo file or template used when generating the Tailscale package repository configuration, then inspect how its repository options are defined. Update the configuration so it includes autorefresh=1 and verify that the generated repository file contains the setting.

Written by the indexing model from the issue text.