FIX: prevent navigation block when device time is adjusted backward

[joaovvrodrigues]

Description

This PR fixes an issue where Modular’s navigation system could prevent page transitions if the device's date/time was adjusted backward.

Context

In some systems, the device’s date and time can be automatically synchronized via an NTP server, an API endpoint, or external hardware. If the device clock was ahead and then corrected to an earlier time, the time difference calculation (currentTime.difference(_lastClick)) would result in a negative value. Since the original code blocked navigation when this difference was less than 500ms, this could permanently prevent navigation.

Solution

Now, the time difference calculation ensures it never goes negative:

final diffTimes = currentTime.isBefore(_lastClick) ? 0 : currentTime.difference(_lastClick).inMilliseconds;

If currentTime is earlier than _lastClick, the difference is considered 0, allowing navigation to proceed as expected.

Breaking Change

• Yes, this is a breaking change.
• No, this is not a breaking change.