refactor(RootSiblingsManager): Updates the component structure and exports the default root component.

- Modifies the `wrapRootComponent` return value to include the root component.
- Adds a `DefaultRootSiblingParent` export for external access to the root component.
- Refactors the component initialization logic to support the new return structure.

Author: William

src/RootSiblingsManager.tsx

@@ -40,7 +40,7 @@ function getActiveManager(id: string | number | symbol): RootSiblingManager {
 
   return defaultManager;
 }
-export const DefaultRootSiblingParent = Root;
+export { Root as DefaultRootSiblingParent };
 export default class RootSiblingsManager {
   private id: string;
   private manager: RootSiblingManager;