Building time zone field

PR #11285. Settings → Property → Building → "Time zone". Captured from the branch's own dev server against the anonymized stage table, signed in as the smoke user.

No zone stored

A real stage building with no time zone. The field says "Pick a time zone" and asks for one. Nothing is filled in.

The choices

Eight US zones, in plain names.

After picking Central

The choice shows as "Central (Chicago)" and the helper line changes. Save was never pressed, so nothing was written to stage.