Fix: Passwordless Verify

[seanaye]

This PR addresses the issue detailed here: auth0/lock#2027 by adding the clientID to outgoing requests to passwordless/verify

[stevehobbsdev]

Thanks @seanaye. I'm just looking deeper at the circumstances around why you're getting this error in the first place and why we haven't heard more about it. I can't reproduce this in my own environment - I can go through the entire passwordless flow without it sending client_id and I don't get this error. It's clear from the docs that such a parameter is required, but seems like it's only required sometimes.

It's worth exploring because I think there are other changes to make beyond just the change in this PR - none of the code around this method suggests that a client ID should be supplied and it's certainly not enforced by the options validator.

However, it's a faily innocuous change at the moment so happy to merge and I'll fill in the rest of that later. Again, thanks for raising 👍🏻

[stevehobbsdev]

There are some unit tests failing as none of them expect this parameter - I'll will update those first.