`preset: "aws-amplify"` does not generate index.html

Environment

nuxt 3.16.2
└── nitropack 2.11.8

node 18.13.0

pnpm 10.4.1

Reproduction

https://github.com/hajiifu/repro-nuxt-generate/

Describe the bug

The nuxt generate command does not generate index.html or other routes such as about.

When I try it locally (when preset is static) it looks fine, but the route is not prerender correctly in the AWS Amplify hosting pipeline.

When I try to reproduce it locally with preset: “aws-amplify” I get a similar situation.

Because of this I get a 404 when accessing the Amplify application.

Additional context

No response

Logs

> nuxt generate

[ nuxi  0:38:27] Nuxt 3.16.2 with Nitro 2.11.8
[ nuxi  0:38:29] ℹ Building for Nitro preset: aws-amplify
[0:38:30] ℹ Building client...
[0:38:30] ℹ vite v6.2.5 building for production...
[0:38:31] ℹ ✓ 137 modules transformed.
[0:38:31] ℹ .nuxt/dist/client/manifest.json                   3.09 kB │ gzip:  0.48 kB
[0:38:31] ℹ .nuxt/dist/client/_nuxt/error-500.CVS4jKuj.css    1.88 kB │ gzip:  0.72 kB
[0:38:31] ℹ .nuxt/dist/client/_nuxt/error-404.BB4Ye6hK.css    3.56 kB │ gzip:  1.10 kB
[0:38:31] ℹ .nuxt/dist/client/_nuxt/yUUGDThL.js               0.20 kB │ gzip:  0.18 kB
[0:38:31] ℹ .nuxt/dist/client/_nuxt/Dzaf0NBM.js               0.21 kB │ gzip:  0.19 kB
[0:38:31] ℹ .nuxt/dist/client/_nuxt/DIho2ksS.js               0.30 kB │ gzip:  0.22 kB
[0:38:31] ℹ .nuxt/dist/client/_nuxt/D2tdmYhX.js               0.41 kB │ gzip:  0.28 kB
[0:38:31] ℹ .nuxt/dist/client/_nuxt/BnFyyr80.js               0.55 kB │ gzip:  0.30 kB
[0:38:31] ℹ .nuxt/dist/client/_nuxt/DYivP7rT.js               3.41 kB │ gzip:  1.54 kB
[0:38:31] ℹ .nuxt/dist/client/_nuxt/DwkqfyqK.js               3.79 kB │ gzip:  1.72 kB
[0:38:31] ℹ .nuxt/dist/client/_nuxt/C0P8YdRB.js               5.70 kB │ gzip:  2.21 kB
[0:38:31] ℹ .nuxt/dist/client/_nuxt/Bd-Ax4RY.js             163.56 kB │ gzip: 62.13 kB
[0:38:31] ℹ ✓ built in 782ms
[0:38:31] ✔ Client built in 791ms
[0:38:31] ℹ Building server...
[0:38:31] ℹ vite v6.2.5 building SSR bundle for production...
[0:38:31] ℹ ✓ 85 modules transformed.
[0:38:32] ℹ ✓ built in 438ms
[0:38:32] ✔ Server built in 443ms
[nitro 0:38:32] ℹ Initializing prerenderer
[nitro 0:38:32] ℹ Prerendering 2 routes
[nitro 0:38:32]   ├─ /404.html (19ms)
[nitro 0:38:32]   ├─ /200.html (19ms)
[nitro 0:38:32] ℹ Prerendered 2 routes in 0.586 seconds
[nitro 0:38:32] ✔ Generated public .amplify-hosting/static
[nitro 0:38:32] ✔ You can preview this build using node .amplify-hosting/compute/default/server.js
[ nuxi  0:38:32] ✔ You can now deploy .amplify-hosting/static to any static hosting!

Start with the reproduction repository at https://github.com/hajiifu/repro-nuxt-generate/ and run nuxt generate using the aws-amplify preset, comparing it with the static preset. Trace the preset's prerendering behavior and verify that index.html and routes such as about are generated so the deployed Amplify application no longer returns 404.