suppress diff on any email addresses without a type, as those are computed

[megan07]

Fixes #150

Workspace will return a list of email addresses (either defined user aliases or ones that are computed, such as the primary email, an associated test email and emails from other managed domains). In the case of computed emails, they seem to not have a type (this is an assumption based on what we've seen). So instead of hardcoding just the primary email and the associated test email, we'll ignore any emails that don't have a type set. This is possible because type is required in our configuration file.

[ari-becker]

Looks good to me 👍

Thank you!