client: Attach system ID to sign-in request (#56675)

This PR makes it so we send up the system ID as a query parameter
alongside the native app sign-in request.

Closes CLO-769.

Release Notes:

- N/A
58d24a610bMarshall Bowers committed on 5/14/2026, 1:29:49 PM· committed by GitHubparentc937fc6
1 file changedLine totals unavailable