[From the Profiler docs](https://reactjs.org/docs/profiler.html#onrender-callback):

> The Profiler requires an onRender function as a prop. React calls this function any time a component within the profiled tree “commits” an update.

However, given:

```jsx
import React from 'react'
import ReactDOM from 'react-dom'

function Counter() {
  const [count, setCount] = React.useState(0)
  const increment = () => setCount(c => c + 1)
  return <button onClick={increment}>{count}</button>
}

function App() {
  return (
    <div>
      <React.Profiler
        id="counter"
        onRender={() => console.log('called')}
      >
        <div>
          Profiled counter
          <Counter />
        </div>
      </React.Profiler>
      <div>
        Unprofiled counter
        <Counter />
      </div>
    </div>
  )
}

ReactDOM.render(<App />, document.getElementById('root'))
```

I'm getting a log when I click on the unprofiled counter.

Reproduction: https://codesandbox.io/s/react-codesandbox-tnff6

Am I misunderstanding this API, or is this a bug?
it('should report the expected times when a high-pri update replaces a mount in-progress', () => {
          const callback = jest.fn();
          const Yield = ({renderTime}) => {
            Scheduler.unstable_advanceTime(renderTime);
            Scheduler.unstable_yieldValue('Yield:' + renderTime);
            return null;
          };
          Scheduler.unstable_advanceTime(5); 
          
          
          const renderer = ReactTestRenderer.create(
            <React.Profiler id="test" onRender={callback}>
              <Yield renderTime={10} />
              <Yield renderTime={20} />
            </React.Profiler>,
            {unstable_isConcurrent: true},
          );
          expect(Scheduler).toFlushAndYieldThrough(['Yield:10']);
          expect(callback).toHaveBeenCalledTimes(0);
          
          Scheduler.unstable_advanceTime(100); 
          
          
          renderer.unstable_flushSync(() => {
            renderer.update(
              <React.Profiler id="test" onRender={callback}>
                <Yield renderTime={5} />
              </React.Profiler>,
            );
          });