fix: User invite not working for a single pill

[AdityaHegde]

1. Fix user invite when there is a single entry and it is a pill.
2. Remove domain whitelist message when there are no domains added.
3. In user invite page, Continue => Skip

[ericokuma]

All three looks good!

Only feedback is there is a bit of delay from when I click on the "Skip" button in the user invitation flow. Would be great to add a loading spinner to the button

[AdityaHegde]

The slow down was probably from local dev server. It compiles pages when you first visit them. But on prod everything is precompiled.