infinite redirect with baseUrl + nested tRPC procedure

[grantnunneley]

Environment

nitro: latest
node: 24

Reproduction

https://stackblitz.com/edit/nitrojs-starter-jczkd8ob?file=vite.config.ts

You'll see the infinite redirect happen when clicking the increment button.

Describe the bug

When configuring nitro/vite to serve from a baseUrl and a call is made to a nested tRPC proc an infinite redirect happens.

Nested tRPC procs craft a url with a . in it, e.g. /trpc/nestedProc.get. I think when the url contains this character, the code introduced in #3817 is hit making nitro think the request is for a static asset. This only seems to happen when baseURL is configured however.

A workaround we've found is to prefix the nested procedure with a character (_ works) that breaks the regex above:

export const router = createTRPCRouter({
  nestedProc: {
    _get: get,
  },
});

Additional context

No response

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