Fix Copy Page menu item layout

Goal

Fix the Copy Page dropdown so icons and labels align horizontally.

Findings

• The screenshot shows desktop dropdown items rendering as plain anchors, with icons stacked above labels.
• DocsCopyPageItem is used under DropdownMenuItem asChild and Button asChild.
• The wrapper does not forward Radix/Button props to the anchor, so menu item classes are dropped.
• No relevant existing docs/solutions note was found for this exact UI bug.

Plan

1. Update DocsCopyPageItem to forward props/ref into the anchor.
2. Verify the component typechecks/lints.
3. Browser-check the dropdown layout.

Progress

• 2026-05-25: Located root cause in apps/www/src/components/docs-copy-page.tsx.
• 2026-05-25: Fixed DocsCopyPageItem by forwarding asChild props/ref to the anchor.
• 2026-05-25: Verified with pnpm install, pnpm --filter www build:source, pnpm --filter www typecheck, pnpm lint:fix, and Chrome on localhost:3001/docs/installation.

Knowledge Capture

No ce-compound doc created. This is a narrow Radix asChild wrapper bug with an obvious local fix and no new project-specific debugging pattern.