Radio group redesign

[GomezIvann]

Checklist

• The build process is done without errors. All tests pass in the /lib directory.
• Self-reviewed the code before submitting.
• Meets accessibility standards.
• Added/updated documentation to /website as needed.
• Added/updated tests as needed.

Description
Redesign of the radio group component following the new design kit specifications, already using the new token architecture (CSS variables).

Additional context
Figma designs - Radio group
Figma designs - Radio input

[Copilot]

Pull Request Overview

This PR implements a redesign for radio group components along with associated form elements and supporting pages to ensure consistency in styling and improved accessibility. Key changes include:

• Extracting common form style components (HelperText, ErrorMessage, Label) and updating their usage across slider, select, and radio group components.
• Refactoring radio group types and components to streamline properties and accessibility attributes.
• Updating related Storybook stories and documentation pages to reflect the new design and behavior.

Reviewed Changes

Copilot reviewed 32 out of 32 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
packages/lib/src/styles/forms/HelperText.tsx	Introduces a styled HelperText component with configurable margin and disabled styling.
packages/lib/src/styles/forms/ErrorMessage.tsx	Adds an ErrorMessage component with improved error icon handling and accessibility.
packages/lib/src/slider/Slider.tsx	Refactors internal Label and HelperText definitions to use shared styled components; updates tick rendering semantics.
packages/lib/src/select/Select.tsx	Replaces internal styling with imported components and adjusts dependency order for callbacks.
packages/lib/src/radio-group/*	Updates types, component structure, and styling for radio group elements; removes redundant theme providers.
apps/website/screens/**	Refactors documentation and layout pages to align with the renamed and reorganized radio group components.

Comments suppressed due to low confidence (2)

packages/lib/src/radio-group/types.ts:1

• Consider renaming 'Option' back to 'RadioOption' to maintain clarity and consistency with the component context.

type Option = {

packages/lib/src/slider/Slider.tsx:135

• Ensure that using an element for tick marks inside a datalist complies with accessibility standards and that the custom styling (e.g., 'all: unset;') does not affect native behavior across different browsers.

const Tick = styled.option<{

[Mil4n0r]

Approved, we have to merge TextInput PR first though!