message: fix: GroundPrimitive prop type
diff: @@ -45,7 +45,7 @@ export interface GroundPrimitiveCesiumReadonlyProps {
  export interface GroundPrimitiveProps
  extends GroundPrimitiveCesiumProps,
  GroundPrimitiveCesiumReadonlyProps,
  - EventProps<any> {
  + EventProps<CesiumGroundPrimitive> {
  // GroundPrimitive
  // Calls when [Primitive#readyPromise](https://cesiumjs.org/Cesium/Build/Documentation/GroundPrimitive.html#readyPromise) is fullfilled
  onReady?: (primitive: CesiumGroundPrimitive) => void;
  