feat(Shortcut): add internationalization (i18n) support

[sg00dwin]

Summary

• Adds optional props for customizing all user-facing mouse action strings in Shortcut
• Maintains full backward compatibility with English defaults

Details

Applications using Shortcut that need to support non-English languages or custom terminology can now provide custom labels for all mouse action strings.

New Props

All props are optional with English defaults:

• hoverLabel: Custom label for "Hover" action (default: "Hover")
• clickLabel: Custom label for "Click" action (default: "Click")
• rightClickLabel: Custom label for "Right click" action (default: "Right click")
• dragLabel: Custom label for "Drag" action (default: "Drag")
• dragAndDropLabel: Custom label for "Drag + Drop" action (default: "Drag + Drop")

Example Usage

import { useTranslation } from 'react-i18next';

const MyComponent = () => {
  const { t } = useTranslation();

  return (
    <Shortcut
      keys={['cmd', 'shift']}
      click
      clickLabel={t('shortcut.click')}
      hover
      hoverLabel={t('shortcut.hover')}
      description="Save document"
    />
  );
};

Test plan

• All existing tests pass (backward compatibility maintained)
• Added new test with French labels to verify i18n functionality
• Build completes successfully
• No breaking changes - existing usage works exactly as before

Assisted by Claude Code

[patternfly-build]

Preview: https://react-component-groups-pr-component-groups-910.surge.sh

A11y report: https://react-component-groups-pr-component-groups-910-a11y.surge.sh