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Closes https://github.com/microsoft/playwright/issues/32853 Vite turns the shorthand fragment notation `<></>` into `import { Fragment } from "react"; <Fragment></Fragment>`. On the Node.js side of things, this `react` import resolves to our mock version of React, which currently mocks `Fragment` as `{}`. Currently, we pass that straight to `React.createElement`, which throws an error. The fix is to make our `Fragment` mock detectable with a tag, and when we render it replace it with the real `__pwReact.Fragment`.