Restore async-iterable Node return types

Summary:
Restore the previous `AsyncIteratorObject` return types for `fs.promises.glob`, `fs.promises.watch`, and `timers/promises.setInterval` in the Node Flow libdef.

Changelog: [Internal]

Differential Revision: D127844351

Author: cortinico

flow-typed/environment/node.js

@@ -2422,8 +2422,8 @@ declare module 'fs' {
       options?: GlobOptions<WithFileTypes>,
     ): Node$Conditional<
       WithFileTypes,
-      AsyncIterator<Dirent>,
-      AsyncIterator<string>,
+      AsyncIteratorObject<Dirent>,
+      AsyncIteratorObject<string>,
     >,
     lchmod(path: FSPromisePath, mode: number): Promise<void>,
     lchown(path: FSPromisePath, uid: number, guid: number): Promise<void>,
@@ -2533,7 +2533,7 @@ declare module 'fs' {
         maxQueue?: number,
         overflow?: 'ignore' | 'throw',
       }>,
-    ): AsyncIterator<{eventType: string, filename: ?string}>,
+    ): AsyncIteratorObject<{eventType: string, filename: ?string}>,
     write<T extends Buffer | Uint8Array>(
       filehandle: FileHandle,
       buffer: T,
@@ -4271,7 +4271,7 @@ declare module 'timers/promises' {
     delay?: number,
     value?: T,
     options?: TimerOptions,
-  ): AsyncIterator<T>;
+  ): AsyncIteratorObject<T>;
 
   declare export var scheduler: Readonly<{
     wait(delay: number, options?: TimerOptions): Promise<void>,