* fix: prevent deselecting active option in ToggleGroup
Radix UI's single-type ToggleGroup allows deselection by default,
calling onValueChange("") when the active item is clicked.
Fix by converting to controlled mode with proper dual-mode support:
- Controlled (value prop): parent owns state, component just filters
empty values from onValueChange. Parent can still reject changes.
- Uncontrolled (defaultValue prop): internal useState prevents
deselection by only updating state for non-empty values.
* Update ToggleGroup.tsx
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Co-authored-by: Sahitya Chandra <sahityajb@gmail.com>
Co-authored-by: Eunjae Lee <hey@eunjae.dev>