Resolve promise when qr modal is closed

[GabrielBuragev]

Describe the bug

Using package @walletconnect/ethereum-provider": "^2.3.2

I do this...

const provider = await WalletConnectV2.init({
        chains,
        projectId: '<project_id>',
        rpcMap,
      });
const result = await provider.enable();

// If the user closes the modal, the code below is never reached
// ...

return result

Calling enable() triggers the modal. But if the user closes the modal without scanning the qr code, this promise never resolves.

It would be very helpful to either have a rejection of the promise to indicate that the modal was closed, or resolve with a boolean indicating the state of the action.

SDK Version (if relevant)

• Package: @walletconnect/ethereum-provider
• Version 2.3.2

To Reproduce
https://codesandbox.io/s/crazy-hypatia-9p1g28?file=/src/App.vue

Steps to reproduce the behavior:

1. Click on connect
2. connecting flag should be set to true
3. Wait a couple of seconds until the QR code modal pops up
4. close it
5. connecting flag is not set to false

Expected behavior
On modal close, the call to provider.enable() should either resolve with a falsy value or throw an error.

[GabrielBuragev]

Thanks for fixing this @ganchoradkov !