Switch Jest coverageProvider from babel (default) to v8 (#7025)

Ref:
- https://jestjs.io/docs/29.0/configuration#coverageprovider-string
- https://jestjs.io/blog/2020/01/21/jest-25#v8-code-coverage

package.json

@@ -100,6 +100,7 @@
       "!lib/**/{__tests__,testUtils}/**/*.{js,mjs}"
     ],
     "coverageDirectory": "./.coverage/",
+    "coverageProvider": "v8",
     "coverageReporters": [
       "lcov",
       "text-summary"