Use external URL for Auth Flow for Nabu Casa

[noxhirsch]

I noticed, that when I hardcode my external URL from Nabu Casa into the component, I can use the standard auth flow - the same when I set my external URL as internal URL. Without that I could only use the alternative auth flow. It would be nice to either have a checkbox to use the external URL or an input field for a custom URL to use (or maybe there's even a better solution).

[sharkpunch5]

I have this issue the link generated is one for hte local network, when i replace the redirect uri with the nabu casa address i get Error, the originating url does not seem to be a valid microsoft redirect as an error from home assistant