Fixes#28443Fixes#27866
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## Summary by CodeRabbit
- **New Features**
- Introduced `IconSelectControlV2` for enhanced icon selection with
keyboard navigation and state updates.
- Added new `iconStyle` theme property for users to define icon styles
globally.
- Implemented dynamic icon loading with fallback options, improving icon
management.
- **Enhancements**
- Simplified icon usage across various components like `Button`,
`IconButton`, `Menu`, `ModalHeader`, `TextInput`, and more by directly
using icon names.
- Enhanced `Tag` component to use a generic `Icon` component for the
remove action.
- **Style Updates**
- Added CSS classes for resizing, boundary display, and pointer event
handling.
- Updated icon size definitions using CSS custom properties.
- **Bug Fixes**
- Fixed icon-related issues in `Button`, `ActionGroup`, `Menu`, and
`TextInput` components to ensure proper icon display.
- **Documentation**
- Updated storybook and test cases to reflect new icon selection and
usage.
- **Refactor**
- Refactored theme and token management to include `iconStyle` for
consistent icon theming.
- Refined the `ButtonGroupWidget` and `MenuButtonWidget` to use the new
icon selection mechanism.
- **Chores**
- Cleaned up unused icon imports and components across the codebase to
streamline the icon system.
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