Sort RouteList by create_time and handle "timeless" routes gracefully

[coding-jaguar]

Pull Request: Sort RouteList by create_time and Handle "Timeless" Routes Gracefully (Fixes #60)

Problem

With OpenPilot 0.9.7 removing RTC support, some routes lack time data This required:

1. Showing "timeless" routes in the correct sequence using create_time.
2. Hiding date/time for "timeless" routes to avoid invalid displays.

Solution

1. Sort: Updated RouteList to display routes in descending order of create_time.
2. UI Updates: For "timeless" routes:
   • Hid Date/Time: No valid time available.
   • Hid Duration & Engaged %: These rely on timing data, which is invalid for "timeless" routes.

Testing

• Verified routes are ordered by create_time (newest first).
• Confirmed "timeless" routes render correctly without date/time, duration, or engaged percentage.
• Ensured all other routes display full details.

Feedback

• Hiding duration and engaged percentage for "timeless" routes was an additional decision to ensure consistency. Feedback welcome on this approach.

Fixes

Closes #60.

[github-actions]

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