feat(sidebar): add expand sidebar on hover functionality

[adeshgg]

Description

Added a new prop expandOnHover to SidebarProvider, that would expand the sidebar on hover.

sidebar.webm

Changes

Updated the following files:

• apps/v4/registry/new-york-v4/ui/sidebar.tsx
• apps/www/registry/default/ui/sidebar.tsx
• apps/www/registry/new-york/ui/sidebar.tsx

Ran pnpm registry:build on root to generate the sidebar style json files

Impact

Will add a new prop to the SidebarProvider Component that expands the sidebar on hover (default: false).

Testing

• ✅ Manual verification of the sidebar hover functionality
• ✅ Other Component functionality remains unchanged
• ✅ Ran pnpm test, all tests passing

Closes #5766

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