HT-964: Provide capability to configure secondary label for radio fields

[namudara1]

Checklist

• Test Coverage is 100% for the newly added code
• Storybook stories are added/updated for the changed areas
• Components standards defined in this document are followed
• Code is linted properly
• Developer testing is done for the affected areas
• Package version updated (not applicable to ent branch)
• Changelog.md updated on possible breaking (applicable to ent branch)

[Copilot]

Pull request overview

This PR adds the capability to configure secondary labels for radio input fields, which are displayed in parentheses with reduced opacity (50%) next to the primary label. The feature allows developers to provide additional contextual information for radio options, such as "Full Time (40 hours/week)".

Key Changes:

• Added secondaryLabel prop to RadioInput and RadioGroup components with proper TypeScript typing
• Implemented visual styling for secondary labels with reduced opacity and spacing
• Updated Storybook documentation with examples demonstrating the new feature

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
components/src/core/components/Input/RadioInput.vue	Added secondaryLabel prop and rendered it conditionally in both left and right label positions
components/src/core/components/Input/RadioGroup.vue	Extended Options interface with optional secondaryLabel field and passed it to RadioInput with translation support
components/src/core/components/Input/radio-input.scss	Added styling for secondary label with 50% opacity and 0.25rem left margin
storybook/stories/core/components/Input/RadioInput.stories.js	Added secondaryLabel control and new story demonstrating the feature
storybook/stories/core/components/Input/RadioGroup.stories.js	Updated options documentation to include secondaryLabel and added comprehensive story example
changelog.md	Documented the change with commit hash and affected files

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[Super-Chama]

Consider adding few test to radio input to check if secondary label is showing as expected