ButtonGroup default value not selected

[hughess]

Steps To Reproduce

Create a ButtonGroup and add a ButtonGroupItem to serve as the default selected option.

Expected Behavior

• Default option should appear shaded as the selected option
• Default option should be populated as the value of ${inputs.input_name}

Actual Behaviour

• ButtonGroupItem appears but is not selected
• ${inputs.input_name} starting value is null

Workarounds

None

Other

It would be helpful to have a defaultValue prop to set a default without needing to create a new ButtonGroupItem