(5/n) shadcn: migrate all components and blocks

[shadcn]

This PR:

• migrates all components and blocks to Tailwind v4
• upgrades to React 19 i.e no more forwardRef
• simplifies the TypeScript types
• adds data-slot attributes to all primitives
• adds *Icon suffix to all lucide-react imports

The v4 upgrade is done in a separate workspace but builds to apps/www/public/r/styles/new-york-v4. This allows us to detect Tailwind v4 in the cli and hotswap the registry url.

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[M0HAMEDHANY]

#6538
@shadcn

if you are facing issue because of tailwind priority classes try to put the sm:max-w-md in this order :

"fixed left-[50%] top-[50%] z-50 grid w-full max-w-[calc(100%-2rem)] translate-x-[-50%] translate-y-[-50%] gap-4 border bg-background p-6 shadow-lg duration-200 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%] sm:max-w-md sm:rounded-lg"