melon/vite-dev-server-url-fallback

for issue reproduction

vite-dev-server-url-fallback

Expected

• http://localhost:5173/
  • vite:html-fallback Rewriting GET / to /index.html
• http://localhost:5173/subfolder/
  • vite:html-fallback Rewriting GET /subfolder/ to /subfolder/index.html
• http://localhost:5173/subfolder/content
  • vite:html-fallback Rewriting GET /subfolder/content to /subfolder/index.html

Actually Happening

• ✅ http://localhost:5173/
  • vite:html-fallback Rewriting GET / to /index.html
• ✅ http://localhost:5173/subfolder/
  • vite:html-fallback Rewriting GET /subfolder/ to /subfolder/index.html
• ❌ http://localhost:5173/subfolder/content
  • vite:html-fallback Rewriting GET /subfolder/content to /index.html