Add changelog for 2.17.8

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changelog 2.17.8

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Changelog

Features

• Introduced RouterFailure#isRetryable which indicates if that makes sense to retry with this type of failure. [#7597](https://github.com/mapbox/mapbox-navigation-android/pull/7597)
  For convenience, you can use an extension property isRetryable for the list of RouterFailure in NavigationRouterCallback.onFailure.
  In case of reroute use RerouteState.Failed.isRetryable.
• Introduced NavigationOptions#longRoutesOptimisationOptions which changes the Nav SDK behavior so that it's able to handle heavy routes objects. See documentation of OptimiseNavigationForLongRoutes to learn more about it. [#7564](https://github.com/mapbox/mapbox-navigation-android/pull/7564)
• Route refresh now refreshes LegAnnotation#freeflowSpeed and LegAnnotation#currentSpeed. [#7582](https://github.com/mapbox/mapbox-navigation-android/pull/7582)

Bug fixes and improvements

• Fixed an issue when alertcCodes and trafficCodes were lost during route refresh. [#7568](https://github.com/mapbox/mapbox-navigation-android/pull/7568)
• Fixed backward positioning jumps after GPS signal jump detection. [#7588](https://github.com/mapbox/mapbox-navigation-android/pull/7588)
• Improved processing of ETC signals. [#7588](https://github.com/mapbox/mapbox-navigation-android/pull/7588)
• Supported ETC 2.0 payment method. [#7614](https://github.com/mapbox/mapbox-navigation-android/pull/7614)
• Fixed crash which sometimes happens during stopping of active guidance [#7636](https://github.com/mapbox/mapbox-navigation-android/pull/7636)
• Optimised memory consumption of Copilot. [#7622](https://github.com/mapbox/mapbox-navigation-android/pull/7622)
• Fixed an issue where route might have hung on reroute after a deviation had occurred. [#7651](https://github.com/mapbox/mapbox-navigation-android/pull/7651)
• Fixed an issue where a user might have received constant off-route events and no route progress. [#7651](https://github.com/mapbox/mapbox-navigation-android/pull/7651)
• Fixed an issue where route refreshes might not have been paused after invoking RouteRefreshController#pauseRouteRefreshes. [#7579](https://github.com/mapbox/mapbox-navigation-android/pull/7579)
• Optimised memory and network usage. [#7555](https://github.com/mapbox/mapbox-navigation-android/pull/7555)
• Fixed an issue when navigation could switch between alternative routes in cycle when a user moves backward. [#7626](https://github.com/mapbox/mapbox-navigation-android/pull/7626)

Known issues ⚠️

• Seamless switch to a route alternative doesn't always work for multi legs routes, regular reroute happens instead.

Other changes

Android Auto Changelog

Features

Bug fixes and improvements

• The app is now considered as the one in active navigation only when an active route is set to MapboxNavigation. Previously it was always considered active. [#7366](https://github.com/mapbox/mapbox-navigation-android/pull/7366)
• When Android Auto host tells the app to stop active navigation because another app starts navigating, now SDK will enter FreeDrive mode instead of stopping trip session completely. [#7366](https://github.com/mapbox/mapbox-navigation-android/pull/7366)