Immediate retry on challenge closed

[hamish-snoop]

We're attempting to auto trigger verification on challenge closed error. It seems this is causing a bit of a timing problem and the SDK thinks the dialog is still showing because I get a console log message:
"DialogFragment was already added"
But no actual onFailure callback, leaving us in an unhandled state.

I currently have a workaround to pause a bit before triggering the auto-retry verification, which seems to work.

regards

Samsung S21 Android 12 device
SDK version 3.3.3

[CAMOBAP]

Implemented with HCaptchaConfig.retryPredicate check README for more information