NICE DCV with external authentication -- can I avoid supplying a password to unlock the screen? (Web client with Linux)

I logged this is a bug (the said feature request). See my original question here: https://repost.aws/questions/QUNQuF_O0BQjuPNDg1eEhz9Q/use-dcv-gateway-but-it-is-not-logging-into-instance-brings-up-ctrl-alt-delete-screen

Before External Authentication we were passing username and passwords as query params when connecting via Browser with a really long bogus/unused param before it to push the username and password to the end.