[Bug]: Non-default external domain being listed first for HTTP services

[runleveldev]

Current URL

/sites/1/containers/new

Username

rgingras

Version

a2bd601

Steps to reproduce

1. Create or edit a container
2. Add an HTTP service
3. Observe non-default domain populated in the field

Expected behavior

The first default domain for the site should be populated.

Actual behavior

The alphabetically first domain is used.

Additional context

No response