BasicNavigationActivity IllegalStateException: Calling getSourceAs when a newer style is loading/has loaded.

When testing https://github.com/mapbox/mapbox-navigation-android/pull/3287 and BasicNavigationActivity from the examples test app run into the following 💥

07-06 12:38:19.365 6967-6967/com.mapbox.navigation.examples E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.mapbox.navigation.examples, PID: 6967
    java.lang.IllegalStateException: Calling getSourceAs when a newer style is loading/has loaded.
        at com.mapbox.mapboxsdk.maps.Style.validateState(Style.java:777)
        at com.mapbox.mapboxsdk.maps.Style.getSourceAs(Style.java:148)
        at com.mapbox.mapboxsdk.location.SymbolLocationLayerRenderer.refreshSource(SymbolLocationLayerRenderer.java:321)
        at com.mapbox.mapboxsdk.location.SymbolLocationLayerRenderer.setBearingProperty(SymbolLocationLayerRenderer.java:337)
        at com.mapbox.mapboxsdk.location.SymbolLocationLayerRenderer.setCompassBearing(SymbolLocationLayerRenderer.java:172)
        at com.mapbox.mapboxsdk.location.LocationLayerController$3.onNewAnimationValue(LocationLayerController.java:276)
        at com.mapbox.mapboxsdk.location.LocationLayerController$3.onNewAnimationValue(LocationLayerController.java:273)
        at com.mapbox.mapboxsdk.location.MapboxAnimator.postUpdates(MapboxAnimator.java:104)
        at com.mapbox.mapboxsdk.location.MapboxAnimator.onAnimationUpdate(MapboxAnimator.java:91)
        at android.animation.ValueAnimator.animateValue(ValueAnimator.java:1463)
        at android.animation.ValueAnimator.setCurrentFraction(ValueAnimator.java:642)
        at android.animation.ValueAnimator.setCurrentPlayTime(ValueAnimator.java:589)
        at android.animation.ValueAnimator.start(ValueAnimator.java:1106)
        at android.animation.ValueAnimator.start(ValueAnimator.java:1117)
        at android.animation.AnimatorSet.start(AnimatorSet.java:586)
        at com.mapbox.mapboxsdk.location.MapboxAnimatorSetProvider.startAnimation(MapboxAnimatorSetProvider.java:31)
        at com.mapbox.mapboxsdk.location.LocationAnimatorCoordinator.playAnimators(LocationAnimatorCoordinator.java:373)
        at com.mapbox.mapboxsdk.location.LocationAnimatorCoordinator.resetAllLayerAnimations(LocationAnimatorCoordinator.java:467)
        at com.mapbox.mapboxsdk.location.LocationComponent.updateAnimatorListenerHolders(LocationComponent.java:1536)
        at com.mapbox.mapboxsdk.location.LocationComponent.access$1200(LocationComponent.java:98)
        at com.mapbox.mapboxsdk.location.LocationComponent$8.onCameraTrackingChanged(LocationComponent.java:1674)
        at com.mapbox.mapboxsdk.location.LocationCameraController.notifyCameraTrackingChangeListener(LocationCameraController.java:345)
        at com.mapbox.mapboxsdk.location.LocationCameraController.setCameraMode(LocationCameraController.java:123)
        at com.mapbox.mapboxsdk.location.LocationComponent.setCameraMode(LocationComponent.java:613)
        at com.mapbox.mapboxsdk.location.LocationComponent.setCameraMode(LocationComponent.java:577)
        at com.mapbox.navigation.ui.camera.NavigationCamera.setCameraMode(NavigationCamera.java:524)
        at com.mapbox.navigation.ui.camera.NavigationCamera.updateCameraTrackingMode(NavigationCamera.java:207)
        at com.mapbox.navigation.ui.map.NavigationMapboxMap.updateCameraTrackingMode(NavigationMapboxMap.java:550)
        at com.mapbox.navigation.examples.core.BasicNavigationActivity.updateCameraOnNavigationStateChange(BasicNavigationActivity.kt:292)
        at com.mapbox.navigation.examples.core.BasicNavigationActivity.access$updateCameraOnNavigationStateChange(BasicNavigationActivity.kt:51)
        at com.mapbox.navigation.examples.core.BasicNavigationActivity$initListeners$1.onClick(BasicNavigationActivity.kt:177)
        at android.view.View.performClick(View.java:5204)
        at android.view.View$PerformClick.run(View.java:21153)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:148)
        at android.app.ActivityThread.main(ActivityThread.java:5417)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

cc @LukasPaczos @cafesilencio

Reproduce the crash in the examples test app while testing pull request 3287, then start at BasicNavigationActivity.kt lines 292 and 177 and follow the stack trace into the camera and location components. Done means the navigation state change no longer triggers the reported IllegalStateException.