Chore: Upgrade Vitest to v4 (#7797)

## Summary

https://vitest.dev/guide/migration.html#vitest-4

## Changes

- **What**: Update Vitest and some associated dependencies
- **What**: Fix issue with our existing mocks and mock types

## Review Focus

Double check the test updates. I tried to keep the changes minimal.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7797-Chore-Upgrade-Vitest-to-v4-2d96d73d3650810cbe3ac42d7bd6585a)
by [Unito](https://www.unito.io)

---------

Co-authored-by: GitHub Action <action@github.com>

tests-ui/tests/composables/maskeditor/useCanvasHistory.test.ts

@@ -43,7 +43,7 @@ describe('useCanvasHistory', () => {
         return rafCallCount
       }
     )
-    vi.spyOn(window, 'alert').mockImplementation(() => {})
+    vi.stubGlobal('alert', () => {})
 
     const createMockImageData = () => {
       return {