Turbopack: Always use blob: URLs for assets in middleware (#71471)

Closes PACK-3304

This was originally done in #63209

But I don't think this is correct. 

Without this change, the added test fails with
```
Error: failed to pipe response
    at pipeToNodeResponse (/next.js/packages/next/dist/server/pipe-readable.js:126:15)
    at async handleRequest (/next.js/packages/next/dist/server/lib/router-server.js:275:24)
    at async requestHandlerImpl (/next.js/packages/next/dist/server/lib/router-server.js:384:13)
    at async Server.requestListener (/next.js/packages/next/dist/server/lib/start-server.js:142:13) {
  [cause]: TypeError [ERR_INVALID_URL]: Invalid URL
      at new NodeError (node:internal/errors:405:5)
      at new URL (node:internal/url:676:13)
      at /next.js/test/tmp/next-test-1729241452365-597/.next/server/edge/chunks/ssr/[project]_packages_next_dist_compiled_fd94e8._.js:31684:26 {
    input: '/_next/static/media/noto-sans-v27-latin-regular.7e1666d1.ttf',
    code: 'ERR_INVALID_URL'
  }
}
```
(because the `blob:` prefix is missing for the font static URL)

Author: mischnic

crates/next-api/src/middleware.rs

@@ -106,7 +106,7 @@ impl MiddlewareEndpoint {
             .context("Entry module must be evaluatable")?;
         evaluatable_assets.push(evaluatable);
 
-        let edge_chunking_context = self.project.edge_chunking_context(true);
+        let edge_chunking_context = self.project.edge_chunking_context(false);
 
         let edge_files = edge_chunking_context.evaluated_chunk_group_assets(
             module.ident(),

test/e2e/edge-can-use-wasm-files/index.test.ts

@@ -111,7 +111,7 @@ describe('middleware can use wasm files', () => {
           expect.arrayContaining([
             expect.objectContaining({
               filePath: expect.stringMatching(
-                /^server\/edge\/chunks\/ssr\/.*\.wasm$/
+                /^server\/edge\/chunks\/.*\.wasm$/
               ),
               name: expect.stringMatching(/^wasm_/),
             }),

test/e2e/og-api/app/middleware.js

@@ -0,0 +1,12 @@
+import { NextResponse } from 'next/server'
+import { ImageResponse } from 'next/og'
+
+export async function middleware(req) {
+  if (req.nextUrl.pathname === '/middleware') {
+    return new ImageResponse(<div>hi</div>, {
+      width: 1200,
+      height: 630,
+    })
+  }
+  return NextResponse.next()
+}

test/e2e/og-api/index.test.ts

@@ -43,6 +43,14 @@ describe('og-api', () => {
     expect(body.size).toBeGreaterThan(0)
   })
 
+  it('should work in middleware', async () => {
+    const res = await fetchViaHTTP(next.url, '/middleware')
+    expect(res.status).toBe(200)
+    expect(res.headers.get('content-type')).toContain('image/png')
+    const body = await res.blob()
+    expect(body.size).toBeGreaterThan(0)
+  })
+
   if ((global as any).isNextStart) {
     it('should copy files correctly', async () => {
       expect(next.cliOutput).not.toContain('Failed to copy traced files')