Delay callback cleanup
Delay callback cleanup

In some circumstances this could get hit before trhe launchURL block, causing auth to fail incorrectly.

AzureAD/azure-activedirectory-library-for-objc,msintuneappsdk/azure-activedirectory-library-for-objc,AzureAD/azure-activedirectory-library-for-objc,AzureAD/azure-activedirectory-library-for-objc,msftberlin/azure-activedirectory-library-for-objc,msftberlin/azure-activedirectory-library-for-objc,msintuneappsdk/azure-activedirectory-library-for-objc,AzureAD/azure-activedirectory-library-for-objc,AzureAD/azure-activedirectory-library-for-objc