fix: e2e tests, use vitest 4.0.3

[darknoon]

Motivation: I wanted to see how the e2e tests worked, but when I checked out the repo they were failing:

~/Developer/Web/_others/vitest-vscode (main u=) $ pnpm run test-e2e

> [email protected] test-e2e /Users/andrew/Developer/Web/_others/vitest-vscode
> vitest --root test/e2e


 DEV  v4.0.0-beta.12 /Users/andrew/Developer/Web/_others/vitest-vscode/test/e2e

✔ Validated version: 1.105.1
✔ Found existing install in /Users/andrew/Developer/Web/_others/vitest-vscode/.vscode-test/vscode-darwin-arm64-1.105.1

⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ Failed Suites 1 ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯

 FAIL  runner.test.ts [ runner.test.ts ]
TypeError: Siganture "test(name, fn, { ... })" was deprecated in Vitest 3 and removed in Vitest 4. Please, provide options as a second argument instead.
 ❯ runner.test.ts:22:1
     20| })
     21| 
     22| test('basic', async ({ launch }) => {
       | ^
     23|   const { page, tester } = await launch({
     24|     workspacePath: './samples/e2e',

⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯[1/1]⎯


 Test Files  1 failed (1)
      Tests  no tests
   Start at  10:47:44
   Duration  747ms (transform 30ms, setup 312ms, collect 0ms, tests 0ms, environment 0ms, prepare 4ms)

 FAIL  Tests failed. Watching for file changes...
       press h to show help, press q to quit

After these changes:

> [email protected] test-e2e /Users/andrew/Developer/Web/_others/vitest-vscode
> vitest --root test/e2e

 DEV  v4.0.3 /Users/andrew/Developer/Web/_others/vitest-vscode/test/e2e

✔ Validated version: 1.105.1
✔ Found existing install in /Users/andrew/Developer/Web/_others/vitest-vscode/.vscode-test/vscode-darwin-arm64-1.105.1
 ✓ runner.test.ts (7 tests) 48198ms
   ✓ basic  10991ms
   ✓ workspaces  4994ms
   ✓ custom imba language  4714ms
   ✓ browser mode correctly collects tests  6431ms
   ✓ watcher updates the file if there are several config files  7907ms
   ✓ ast collector keeps the pattern on rerun  6996ms
   ✓ continuous testing (1)
     ✓ reruns tests on test file change  6163ms

 Test Files  1 passed (1)
      Tests  7 passed (7)
   Start at  10:11:08
   Duration  49.19s (transform 28ms, setup 397ms, collect 31ms, tests 48.20s, environment 0ms, prepare 3ms)

 PASS  Waiting for file changes...
       press h to show help, press q to quit

[darknoon]

This was a little bit cursed, any alone wasn't telling ts that this was a valid argument to defineConfig(…) 🤷

[sheremet-va]

Sorry for a long response! I did some more refactoring that should help with internal tests