Convert DOMPropertyOperations-test to createRoot

[kassens]

Convert DOMPropertyOperations-test to createRoot

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• Convert createReactClassIntegration-test to createRoot #27914
• -> Convert DOMPropertyOperations-test to createRoot #27911

[jackpope]

This is pretty repetitive to have to write out for each unit test. What if we added a render function to internal-test-utils that had a signature that matches RTL with the basics of what we need:

const {container, rerender} = render(<div title="Tip!" />, {container?: document.createElement('div')})

Internally root.render is always wrapped in act and rerender takes JSX to render into the original root.

[kassens]

There's some value in not adding too many abstractions for tests which is why I started with 0 new abstractions here to see how it looks.

Wondering what others think about verbosity vs. avoiding extra abstractions.

[rickhanlonii]

We're generally against test utils because abstractions can be hard to change and it makes it difficult to debug or understand the use case when a test fails, which is why all the existing tests are verbose (some extremely so) even though we could have created a util.

The verbosity is also nice because it serves as documentation for how the APIs will be used by users, without needing to unwrap the abstractions we use in our tests.