Checklist

• I have updated to the latest available Home Assistant version.
• I have cleared the cache of my browser.
• I have tried a different browser to see if it is related to my browser.
• I have tried reproducing the issue in safe mode to rule out problems with unsupported custom resources.

Describe the issue you are experiencing

Duration isn't supported, yet the UI offers it and creates an invalid yaml when you enter a value.

Describe the behavior you expected

No error message -- OR -- UI should not offer invalid fields.

Steps to reproduce the issue

1. Create an automation as in the picture
2. Press "save"
3. ?
4. Profit ...um... fail

What version of Home Assistant Core has the issue?

2024.4.4

What was the last working version of Home Assistant Core?

No response

In which browser are you experiencing the issue with?

125.0.6422.4

Which operating system are you using to run this browser?

Windows 10

State of relevant entities

No response

Problem-relevant frontend configuration

No response

Javascript errors shown in your browser console/inspector

No response

Additional information

Resetting the duration to 0 does NOT generate valid yaml.