ManeuverView update does not display anything

Nobody has claimed this yet.

When I use setManeuverTypeAndModifier on my ManeuverView it does not display anything.

**Android API:**
minSdkVersion 16
targetSdkVersion 28
**Mapbox Navigation SDK version:**
implementation com.mapbox.mapboxsdk:mapbox-android-sdk:7.1.2
implementation com.mapbox.mapboxsdk:mapbox-sdk-services:4.3.0
implementation com.mapbox.mapboxsdk:mapbox-android-plugin-annotation-v7:0.5.0
implementation com.mapbox.mapboxsdk:mapbox-android-navigation:0.30.0
implementation com.mapbox.mapboxsdk:mapbox-android-navigation-ui:0.30.0

### Steps to trigger behavior

1.My view is defined in my layout :
`
`

2. I update this view each time I get a BannerInstructionMilestone
`override fun onMilestoneEvent(routeProgress: RouteProgress?, instruction: String?, milestone: Milestone?) {
if (milestone is BannerInstructionMilestone) {
updateBanner(milestone.bannerInstructions.primary())
} else if (milestone is VoiceInstructionMilestone) {
//TODO
}
}

private fun updateBanner(bannerText: BannerText?) {
if (bannerText == null) {
return
}
maneuverView.setManeuverTypeAndModifier(bannerText.type()!!, bannerText.modifier())
val roundaboutAngle = bannerText.degrees()
if (roundaboutAngle != null) {
maneuverView.setRoundaboutAngle(roundaboutAngle.toFloat())
}

text_banner_primary.text = bannerText.text()
}`
3. The bannerText.type()!! is "turn" and bannerText.modifier() is "right"
But it does not display anything even if updateManeuverView is called in ManeuverView

### Expected behavior
Should draw a turn right arrow
### Actual behavior
Display nothing

Start with ManeuverView and its setManeuverTypeAndModifier and updateManeuverView paths, using the reported Android Navigation SDK versions and the turn/right inputs as the reproduction case. Trace why the view produces no drawable output; done means a ManeuverView displays a right-turn arrow after receiving those values.

Written by the indexing model from the issue text.