Improve interrupt behavior in telemetry command

What does this merge request do and why?

This MR improves the behavior when a developer interrupts the gdk telemetry command.

This also adds a test for the gdk telemetry command.

How to set up and validate locally

1. Check your current telemetry status (gdk config get telemetry)
2. Run gdk telemetry
3. Interrupt the process, e.g. with Ctrl + C
4. See a Keeping previous behavior: ... message where the behavior matches your settings from 1.

Impacted categories

The following categories relate to this merge request:

• gdk-reliability - e.g. When a GDK action fails to complete.
• gdk-usability - e.g. Improvements or suggestions around how the GDK functions.
• gdk-performance - e.g. When a GDK action is slow or times out.

Merge request checklist

• This change is backward compatible. If not, please include steps to communicate to our users.
• Tests added for new functionality. If not, please raise an issue to follow-up.
• Documentation added/updated, if needed.
• Announcement added, if change is notable.
• gdk doctor test added, if needed.
• Add the ~highlight label if this MR should be included in the CHANGELOG.md.