Issue Summary

If an Enterprise admin adds a specific user's email address to the Workspace membership restriction allowlist, they are prohibited from being invited.

Steps to Reproduce

1. On Enterprise dashboard, navigate to "Workspace & board permissions"
2. Click the Change button under "Workspace membership restrictions"
3. Enter a user's email such as `jdoe@example.com` in workspace member restrictions
4. try to invite `jdoe@example.com` into enterprise workspace
5. invite failed

Expected Results

invite to `jdoe@example.com` should succeed

Actual Results

The user does not receive the invite

Workaround

Remove the email address and use just the domain "example.com"