Revert "adjust vitest ambient declaration file according to vitest docs (testing-library#612)"

This reverts commit 06d19ba.

Author: vorant94

types/vitest.d.ts

@@ -1,15 +1,11 @@
 import {type expect} from 'vitest'
 import {type TestingLibraryMatchers} from './matchers'
 
-declare module 'vitest' {
-  interface Assertion<T = any>
+export {}
+declare module '@vitest/expect' {
+  interface JestAssertion<T = any>
     extends TestingLibraryMatchers<
       ReturnType<typeof expect.stringContaining>,
       T
     > {}
-  interface AsymmetricMatchersContaining
-    extends TestingLibraryMatchers<
-      ReturnType<typeof expect.stringContaining>,
-      any
-    > {}
 }