Stop depending on @rolldown/binding-wasm32-wasi directly

The binding declares cpu: wasm32, so npm on x64 hosts (Vercel) fails
with EBADPLATFORM. The nodesandbox runtime already installs every
package's *-wasm32-wasi optional dependency (rolldown's included), so
the app doesn't need to list it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

yarn.lock

@@ -1953,7 +1953,6 @@ __metadata:
     "@emnapi/core": "npm:1.11.1"
     "@emnapi/runtime": "npm:1.11.1"
     "@napi-rs/wasm-runtime": "npm:^1.1.6"
-  checksum: 10c0/e248421de5a5d30667deb15274101b73562e0ccb25de708eb7c1e463d825dfbf42e0a498f70093d8c22bf640d21f660c5d9e158001ecbb0e02c8c2be8db4009a
   conditions: cpu=wasm32
   languageName: node
   linkType: hard
@@ -3924,7 +3923,6 @@ __metadata:
     "@fontsource-variable/geist": "npm:^5.3.0"
     "@fontsource-variable/geist-mono": "npm:^5.3.0"
     "@remixicon/react": "npm:^4.9.0"
-    "@rolldown/binding-wasm32-wasi": "npm:1.1.4"
     "@shopify/hydrogen": "npm:0.0.0-preview-116d5d7-20260730141607"
     "@tailwindcss/vite": "npm:4.3.1"
     "@tanstack/query-core": "npm:^5.104.1"