[iOS] Support JS reload for TransferUtility

[jhen0409]

When we reload js in iOS, the transferUtility upload/download will not work.

[cyyuen]

Hey @jhen0409 . Any plan to fix this issue?

[magbicaleman]

@jhen0409, also like to follow up on this. The issue I'm having is not uploading issue (uploading) works fine, but the .subscribe, is not running after second upload. So I can not update the UI to verify that an upload has been completed.

[proProbe]

Would love to get this to work again. Any plans to get this fixed soon?

[proProbe]

anyone?

[jhen0409]

The problem is related to #27, I'll fix it on next Monday, a workaround here, we may add rememberLastInstance option (default: true) for setup. Sorry for long delay.

The goal is #10 but will not be right now.