Fix route alternatives parsing

[korshaknn]

Description

depends on #4791

Fixed:
RouteAlternative.route coming from NN is not a route, it's routeResponse, so it should be parsed as DirectionsResponse

Follow up questions

• alterantives min update interval on SDK is 10sec, in NN 30sec - breaking change?
• on route refresh NN returns route, in alternatives - route response. it's confusing and lead to errors
• invalid alternatives request intervals. see logs

interval = 30sec

2021-10-27 15:33:59.412 19654-27831/com.mapbox.navigation.qa_test_app D/nav-native: SDK onRouteAlternativesChanged size = 0, routeProgress = null
2021-10-27 15:34:08.112 19654-27831/com.mapbox.navigation.qa_test_app D/nav-native: SDK onRouteAlternativesChanged size = 1, routeProgress = null
2021-10-27 15:34:32.244 19654-27829/com.mapbox.navigation.qa_test_app D/nav-native: SDK onRouteAlternativesChanged size = 0, routeProgress = RouteProgress(route=DirectionsRoute{routeIndex=0, 
2021-10-27 15:35:02.662 19654-27831/com.mapbox.navigation.qa_test_app D/nav-native: SDK onRouteAlternativesChanged size = 1, routeProgress = RouteProgress(route=DirectionsRoute{routeIndex=0, 
2021-10-27 15:35:20.256 19654-27832/com.mapbox.navigation.qa_test_app D/nav-native: SDK onRouteAlternativesChanged size = 0, routeProgress = RouteProgress(route=DirectionsRoute{routeIndex=0, 
2021-10-27 15:35:50.566 19654-27829/com.mapbox.navigation.qa_test_app D/nav-native: SDK onRouteAlternativesChanged size = 1, routeProgress = RouteProgress(route=DirectionsRoute{routeIndex=0, 
2021-10-27 15:36:04.882 19654-27832/com.mapbox.navigation.qa_test_app D/nav-native: SDK onRouteAlternativesChanged size = 0, routeProgress = RouteProgress(route=DirectionsRoute{routeIndex=0, 
2021-10-27 15:36:05.200 19654-27831/com.mapbox.navigation.qa_test_app D/nav-native: SDK onRouteAlternativesChanged size = 1, routeProgress = RouteProgress(route=DirectionsRoute{routeIndex=0, 
2021-10-27 15:36:46.907 19654-27831/com.mapbox.navigation.qa_test_app D/nav-native: SDK onRouteAlternativesChanged size = 0, routeProgress = RouteProgress(route=DirectionsRoute{routeIndex=0, 

• there are issues with request canceling. If we comment code in onRouteAlternativesChanged

directionsSession.setRoutes(
                routes = changedRoutes,
                initialLegIndex = 0,
                ROUTES_UPDATE_REASON_ALTERNATIVE
            )

requests go as expected, but with this code, the half of requests is canceled. Is it SDK or NN issue? Logs

2021-10-27 15:40:45.254 19655-28581/com.mapbox.navigation.qa_test_app I/nav-native: Directions Service: Get route request error (type 'RequestCancelled'): Request cancelled
2021-10-27 15:40:45.254 19655-28542/com.mapbox.navigation.qa_test_app W/nav-native: RouteAlternativesControllerWorker::onRoutesRetrieved: Cancelled, type: 3, reqId: 4

@kmadsen have you had such issues? might they be related to NN router?

Changelog

<changelog>Fixed alternatives parsing</changelog>

Screenshots or Gifs

[korshaknn]

@kmadsen ah, I've missed #5037
looks like NN router adds extra issues )

[korshaknn]

closing the PR, I'll cherry-pick needed changes to NN router PR #4791