fix: fix useAsyncFunction implementation

As we wrap an async function we must await it. Otherwise finally is
called immediately.

src/util.ts

@@ -13,14 +13,12 @@ export const useId = (() => {
   }
 })()
 
-export function useAsyncFunction<F extends (...args: never[]) => ReturnType<F>>(
-  fn: F,
-): { isLoading: Ref<boolean>; fn: (...args: Parameters<F>) => ReturnType<F> } {
+export function useAsyncFunction<F extends (...args: never[]) => Promise<unknown>>(fn: F) {
   const isLoading = ref(false)
-  function wrapper(...args: Parameters<F>): ReturnType<F> {
+  async function wrapper(...args: Parameters<F>): Promise<Awaited<ReturnType<F>>> {
     isLoading.value = true
     try {
-      return fn(...args)
+      return (await fn(...args)) as Awaited<ReturnType<F>>
     } finally {
       isLoading.value = false
     }