[Web] No callback when canceling B2C Web Page

[KeeganDC]

I am encountering an issue when canceling the B2C web page
It works correctly on Android, but I receive an error when canceling on the web platform

Steps are:

1. Start the Flutter app
2. Click on Login
3. Load the B2C web page successfully
4. Close the B2C web page
5. Observe the error/logs mentioned below

Web (error) logs:

Upon canceling or closing the B2C web page, the following error is thrown:
Error: PlatformException(error, BrowserAuthError: user_cancelled: User cancelled the flow., null, null)
dart-sdk/lib/internal/js_dev_runtime/private/ddc_runtime/errors.dart 288:49 throw
packages/flutter/src/services/message_codecs.dart 652:7 decodeEnvelope
packages/flutter/src/services/platform_channel.dart 310:18 _invokeMethod
dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 45:50 <fn>
dart-sdk/lib/async/zone.dart 1661:54 runUnary
dart-sdk/lib/async/future_impl.dart 147:18 handleValue
dart-sdk/lib/async/future_impl.dart 784:44 handleValueCallback
dart-sdk/lib/async/future_impl.dart 813:13 _propagateToListeners
dart-sdk/lib/async/future_impl.dart 584:5 [_completeWithValue]
dart-sdk/lib/async/future_impl.dart 657:7 callback
dart-sdk/lib/async/schedule_microtask.dart 40:11 _microtaskLoop
dart-sdk/lib/async/schedule_microtask.dart 49:5 _startMicrotaskLoop
dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 177:15 <fn>

Android (expected result) log

I/flutter (26492): [AzureB2C] Callback received...
I/flutter (26492): [AzureB2C] Callback data: {"tag":"3cdc05e6-04e1-4063-905d-ba5161c02abf","source":"policy_trigger_interactive","reason":"USER_CANCELLED_OPERATION"}