Only First annotation is being returned from Annotation tap detection

Nobody has claimed this yet.

@evil159

```
extension AnnotationController: AnnotationInteractionDelegate {
func annotationManager(_ manager: AnnotationManager, didDetectTappedAnnotations annotations: [Annotation]) {
let annotation = annotations.first
switch annotation {
case let annotation as PointAnnotation:
self.onPointAnnotationClickListener?.onPointAnnotationClick(annotation.toFLTPointAnnotation(), completion: {_ in })
case let annotation as CircleAnnotation:
self.onCircleAnnotationClickListener?.onCircleAnnotationClick(annotation.toFLTCircleAnnotation(), completion: {_ in })
case let annotation as PolygonAnnotation:
self.onPolygonAnnotationClickListener?.onPolygonAnnotationClick(annotation.toFLTPolygonAnnotation(), completion: {_ in })
case let annotation as PolylineAnnotation:
self.onPolylineAnnotationClickListener?.onPolylineAnnotationClick(annotation.toFLTPolylineAnnotation(), completion: {_ in })
default:
print("Can't detemine the type of annotation: \(annotation)")
}
}
}
```

On native side the code is returning only first annotation from list of annotations which were detected on Tap `didDetectTappedAnnotations`

Few clarifications and concerns:

1- Why not return all annotations ?
2- What is tap detect accuracy ? is based on point on Screen Box ?
3- when returning the first annotation from list of annotations, is the list already sorted by annotation sort key ? If Yes, is it ASC or DESC ?

Start with the AnnotationController annotationManager(_:didDetectTappedAnnotations:) delegate shown in the issue and trace how the native tap result reaches Flutter. Determine whether all detected annotations and their ordering are exposed, along with the tap-detection accuracy, then add or update coverage and documentation so the returned behavior is explicit.

Written by the indexing model from the issue text.