[Android Auto] Remove MapboxNavigation from RoutePreviewCarContext

[kmadsen]

Description

Addressing #6141

• Migrate CarSpeedLimitRenderer to MapboxNavigationApp
• CarRoutePreviewScreen can use MapboxNavigationApp.current() since it has single shot actions
• GeoDeeplinkNavigateAction can use MapboxNavigationApp.current() since it has single shot actions

Skipping changelog because there is are no public api changes here.

The remaining migrations are a bit more ambiguous, this classes were some low hanging fruit.

[codecov]

Codecov Report

Merging #6226 (edb9dfc) into main (0c1d2c7) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main    #6226   +/-   ##
=========================================
  Coverage     68.75%   68.75%           
  Complexity     4311     4311           
=========================================
  Files           649      649           
  Lines         26022    26022           
  Branches       3055     3055           
=========================================
  Hits          17891    17891           
  Misses         6971     6971           
  Partials       1160     1160           

[Zayankovsky]

Looks like it is important to have mapboxNavigation here, should we use !! instead? Or at least log a warning.

[kmadsen]

yeah.. thinking about this a bit and going with !!. Going to list a couple examples where a developer could create the crash. In particular, this crash could only happen because of 3. It is a small window of a crash, but we could potentially cure the 3 case with a reset function 🤔.

1. If you current()!! before the setup

MapboxNavigationApp.current()!!.setNavigationRoutes(emptyList())
MapboxNavigationApp.setup(..)

2. If you current()!! before the attach lifecycle onCreate is called

MapboxNavigationApp.attach(..)
MapboxNavigationApp.current()!!.setNavigationRoutes(emptyList())

3. When you're in the middle of resetting options

val navigationOption = MapboxNavigationApp.current()!!.navigationOptions
MapboxNavigationApp.disable()
MapboxNavigationApp.current()!!.setNavigationRoutes(..)
MapboxNavigationApp.setup(navigationOption)

[kmadsen]

Will merge here, but I think we should consider adding a ReadOnlyDelegate that makes it so current()!! is not a common practice

[kmadsen]

Here's the ReadOnlyDelegate #6233 😄