Better way to add 404 page

[sevenc-nanashi]

Clear and concise description of the problem

(First of all, thank you for awesome library!)

I use vite-ssg to generate pages for GitHub actions.
But vite-ssg doesn't recognize [...path].vue, nor 404.html.
There is a workaround, but it looks ugly:

    routes: [
      ...routes,
      // [...path] を404として認識させるハック
      {
        ...routes.find((route) => route.name === "/[...path]")!,
        path: "/404",
        name: "/404",
      },
    ],

Suggested solution

Support [...notFound].vue as 404 page.

Alternative

N/A?

Additional context

No response

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