Fix notification and banner ETAs not in sync

[Guardiola31337]

Description

Fixes notification and banner ETAs not in sync
Fixes #1887

Goal

This was a regression from #1412 where we updated the ETAs to consume NN ones but we forgot to change in MapboxNavigationNotification. This PR solves this

Implementation

In MapboxNavigationNotification fix the duration remaining from routeProgress.durationRemaining() to routeProgress.currentLegProgress().durationRemaining() so both the SummaryModel and MapboxNavigationNotification use the same value. Took the opportunity to refactor MapboxNavigationNotification and make it more testable

Screenshots or Gifs

Before

After

Testing

Please describe the manual tests that you ran to verify your changes

• I have tested locally (including SNAPSHOT upstream dependencies if needed)
• I have tested via a test drive, or a simulation/mock location app
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code

[codecov-io]

Codecov Report

Merging #1889 into master will increase coverage by 0.45%.
The diff coverage is 61.11%.

@@             Coverage Diff              @@
##             master    #1889      +/-   ##
============================================
+ Coverage     33.86%   34.31%   +0.45%     
- Complexity     1031     1042      +11     
============================================
  Files           257      257              
  Lines          8781     8791      +10     
  Branches        665      666       +1     
============================================
+ Hits           2974     3017      +43     
+ Misses         5545     5509      -36     
- Partials        262      265       +3

[danesfeder]

@Guardiola31337 this looks good, thanks for adding the tests here as well 🚢