Description

This improves the messages printed by astro dev start for Airflow 3, by:

• Referring to the "UI" instead of the "webserver"
• Using the API server port config instead of the webserver port config, for Airflow 3 images
• Not printing UI credentials for Airflow 3, because those are not required

📸 Screenshots

📋 Checklist

• Rebased from the main (or release if patching) branch (before testing)
• Ran make test before taking out of draft
• Ran make lint before taking out of draft
• Added/updated applicable tests
• Tested against Astro-API (if necessary).
• Tested against Houston-API and Astronomer (if necessary).
• Communicated to/tagged owners of respective clients potentially impacted by these changes.
• Updated any related documentation