Per #22596 we need to update all string union types to use spinal-case. Currently there is a mix and several components use camelCase

NOTE: this is recommended as a breaking change as part of the move from RC to stable however, it can be done in a non-breaking way by adding spinal-case where needed, keeping the camelCase and marking the camelCase as deprecated.

We're going ahead with the breaking change.

List of changes to make

• Avatar
  • AvatarNamedColor
• Badge
  • PresenceBadgeStatus
• Combobox
  • Combobox.types appearance
  • ComboButton.types apperance
• Input
  • appearance
• Radio
  • RadioGroup.types layout
• Select
  • appearance
• SpinButton
  • appearance
• Tabster
  • useFocusableGroup: tabBehavior
• Textarea
  • appearance

Related #22130