[Dynamic Form] Cannot clean up choice field

[wuxiaojun514]

Category

[ ] Enhancement

[x] Bug

[ ] Question

Version

Please specify what version of the library you are using: [ 3.21 ]

Expected / Desired Behavior / Question

I have a choice field which is not mandatory. I found I cannot remove value on this choice field in Dynamic Form if I already fill in the data on it.

Observed Behavior

I cannot clean up this field if it already have value on it. There is no delete button or empty choice I can click to remove current value.

If you check with the default list form, you will see it has delete button on the choice item.

Steps to Reproduce

1. Make sure the list have a choice field which is not required
2. Create an editor form spfx extension based on Dynamic Form Control
3. You will find that you cannot clean up the value on this choice field

I can do some research to see how to resolve this issue

[wuxiaojun514]

I created a PR(#2016 ) for it