test: Fix test mocks for nextcloud-dialogs

Leftover from Jest -> Vitest migration

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

__mocks__/@nextcloud/dialogs.ts

@@ -3,11 +3,11 @@
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
-import { jest } from '@jest/globals'
+import { vi } from 'vitest'
 
-export const showMessage = jest.fn()
-export const showSuccess = jest.fn()
-export const showWarning = jest.fn()
-export const showInfo = jest.fn()
-export const showError = jest.fn()
-export const showUndo = jest.fn()
+export const showMessage = vi.fn()
+export const showSuccess = vi.fn()
+export const showWarning = vi.fn()
+export const showInfo = vi.fn()
+export const showError = vi.fn()
+export const showUndo = vi.fn()