fix: hide ignored stacktrace on windows

[sapphi-red]

stackIgnorePatterns was not working on windows.
This PR simply fixes it.

Before

 FAIL  expect.test.ts > hi
AssertionError: expected 2 to deeply equal 3
 ❯ expect.test.ts:4:16
      2| 
      3| test('hi', () => {
      4|   expect(1 + 1).toEqual(3)
       |                ^
      5| })
      6| 
 ❯ ../../../packages/vitest/dist/vendor-index.0d6b419a.js:82:26
 ❯ runTest ../../../packages/vitest/dist/entry.js:803:40
 ❯ async runSuite ../../../packages/vitest/dist/entry.js:868:13
 ❯ async runFiles ../../../packages/vitest/dist/entry.js:905:5
 ❯ async startTests ../../../packages/vitest/dist/entry.js:911:3
 ❯ async ../../../packages/vitest/dist/entry.js:938:7
 ❯ async withEnv ../../../packages/vitest/dist/entry.js:533:5
 ❯ async run ../../../packages/vitest/dist/entry.js:937:5

  - Expected   3
  + Received   2

After

 FAIL  expect.test.ts > hi
AssertionError: expected 2 to deeply equal 3
 ❯ expect.test.ts:4:16
      2| 
      3| test('hi', () => {
      4|   expect(1 + 1).toEqual(3)
       |                ^
      5| })
      6| 

  - Expected   3
  + Received   2

[netlify]

✅ Deploy Preview for vitest-dev ready!

Name	Link
🔨 Latest commit	dc49410
🔍 Latest deploy log	https://app.netlify.com/sites/vitest-dev/deploys/624dcb000ac01a0008debece
😎 Deploy Preview	https://deploy-preview-1116--vitest-dev.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site settings.