can not use export * as variable from "./somefile" and import * as variable from "./somefile" in same file with vite v6

[hi-ogawa]

Describe the bug

The issue is initially reported on vitest vitest-dev/vitest#7394. It looks like ssr transform panics for the following input:

import * as x from 'x'; 
export * as x from 'x';

Error: Cannot split a chunk that has already been edited (5:12 – "export * as x from 'x';")
    at MagicString._splitChunk (file:///home/projects/github-pnyojxdr/node_modules/vite/dist/node/chunks/dep-M1IYMR16.js:4876:10)
    at MagicString._split (file:///home/projects/github-pnyojxdr/node_modules/vite/dist/node/chunks/dep-M1IYMR16.js:4866:43)
    at MagicString.update (file:///home/projects/github-pnyojxdr/node_modules/vite/dist/node/chunks/dep-M1IYMR16.js:4608:8)
    at onIdentifier (file:///home/projects/github-pnyojxdr/node_modules/vite/dist/node/chunks/dep-M1IYMR16.js:31422:11)
    at eval (file:///home/projects/github-pnyojxdr/node_modules/vite/dist/node/chunks/dep-M1IYMR16.js:31587:39)
    at walk (file:///home/projects/github-pnyojxdr/node_modules/vite/dist/node/chunks/dep-M1IYMR16.js:31586:15)
    at ssrTransformScript (file:///home/projects/github-pnyojxdr/node_modules/vite/dist/node/chunks/dep-M1IYMR16.js:31388:3)
    at async loadAndTransform (file:///home/projects/github-pnyojxdr/node_modules/vite/dist/node/chunks/dep-M1IYMR16.js:41310:65)

Reproduction

https://stackblitz.com/edit/github-pnyojxdr?file=fs.js

Steps to reproduce

Open stackblitz and run node repro-vite.js

System Info

System:
    OS: Linux 5.0 undefined
    CPU: (8) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
    Memory: 0 Bytes / 0 Bytes
    Shell: 1.0 - /bin/jsh
  Binaries:
    Node: 18.20.3 - /usr/local/bin/node
    Yarn: 1.22.19 - /usr/local/bin/yarn
    npm: 10.2.3 - /usr/local/bin/npm
    pnpm: 8.15.6 - /usr/local/bin/pnpm
  npmPackages:
    vite: ^6 => 6.0.11

Used Package Manager

npm

Logs

No response

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