Make physical address optional in contact info

**Description**
An organization may not want-or need-to list an actual physical address if services are provided online or locally and a central physical address is specious and not helpful to direct people on how to contact us or resolve problems. Simply providing a website, email or office locator link is sometimes more direct, practical contact information.

**JIRA ticket #:** DP-9040

Start by reviewing the Mass.gov project requirements for contact information and the linked JIRA ticket DP-9040. Confirm how physical addresses are currently handled and how website, email, or office-locator links should provide contact guidance. Done means an organization can omit a physical address while retaining practical contact information.

Written by the indexing model from the issue text.