PTC Enroll

This version:
- Fix the certificate ID conversion error affecting certain certificates (IN_20250707_0011).
- Now successfully updates the latest settings.xml file when available (PB_20250109_0005).
- Submit new request for client certificate automatically when it’s about to expire in less than 6 months and collect new certificate when available.
- Fix an issue related to the network interface that let the app crash when the backend is down.