Cannot select other items when the default selected value is "I don't know"

[jaykim1213]

Describe the bug
Cannot select other items when the default selected value is "I don't know"

To Reproduce
Steps to reproduce the behavior:

1. Go to demo-form-elements
2. Go to default values page
3. Go to 10.Checkbox default with Don't know option*
4. Try to select other values

Screenshots

Screen.Recording.2026-04-21.at.4.23.07.PM.mov