fix: Proper async handling for portals

Author: just-boris

src/internal/portal/index.tsx

@@ -23,12 +23,13 @@ function manageDefaultContainer(setState: React.Dispatch<React.SetStateAction<El
 }
 
 function manageAsyncContainer(
-  getContainer: () => Promise<HTMLElement>,
+  getContainer: (options: { abortSignal: AbortSignal }) => Promise<HTMLElement>,
   removeContainer: (container: HTMLElement) => void,
   setState: React.Dispatch<React.SetStateAction<Element | null>>
 ) {
   let newContainer: HTMLElement;
-  getContainer().then(
+  const abortController = new AbortController();
+  getContainer({ abortSignal: abortController.signal }).then(
     container => {
       newContainer = container;
       setState(container);
@@ -38,6 +39,7 @@ function manageAsyncContainer(
     }
   );
   return () => {
+    abortController.abort();
     removeContainer(newContainer);
   };
 }