Generalize mark-scan diagnostic section component

[kshen0]

Overview

Generalizes a MarkScanDeviceDiagnosticSection component for use by the accessible controller, paper handler, PAT device, and headphone diagnostics.

Demo Video or Screenshot

No changes, but manually verified the page renders as expected in a VM

Testing Plan

• For exported readiness report, ran snapshot tests and verified imperceptible difference. Updated to add tolerance.
• Updated frontend tests and manually verified render above

Checklist

• [ ] (N/A) I have added logging where appropriate to any new user actions, system updates such as file reads or storage writes, or errors introduced.