[ios] Remove annotation view from container view when annotation removed (#9025)

The annotation container view keeps an array of annotation views that is separate from the array of subviews that is a property of the UIView parent class. This removes an annotation view from that container view array when the associated annotation is removed. This avoids issue related to previously removed annotation views continuing to be involved in map view logic around annotation view selection due to taps.

platform/ios/CHANGELOG.md

@@ -20,6 +20,7 @@ Mapbox welcomes participation and contributions from everyone. Please read [CONT
 * Added a new initializer to `MGLAnnotationView` so that it is possible to create a new instance with an associated annotation object. ([#9029](https://github.com/mapbox/mapbox-gl-native/pull/9029))
 * Fixed an issue causing a view-backed annotation to disappear immediately instead of animating when the annotation’s `coordinate` property is set to a value outside the current viewport. ([#8565](https://github.com/mapbox/mapbox-gl-native/pull/8565))
 * Fixed an issue in which `MGLMapView` overrode the tint colors of its annotation views. ([#8789](https://github.com/mapbox/mapbox-gl-native/pull/8789))
+* Fixed an issue causing annotation views to persist in the map's annotation container view even after their associated annotations were removed. ([#9025](https://github.com/mapbox/mapbox-gl-native/pull/9025))
 
 ### User interaction
 

platform/ios/src/MGLMapView.mm

@@ -3492,6 +3492,7 @@ public:
 
         annotationView.annotation = nil;
         [annotationView removeFromSuperview];
+        [self.annotationContainerView.annotationViews removeObject:annotationView];
 
         if (annotationTag == _selectedAnnotationTag)
         {