Nested `startTransition` call "takes over" and makes parent `startTransition` unable to track `isPending`.

Seb says it's a bug.

Repro:

https://codesandbox.io/s/pensive-breeze-rg70wn?file=/IndexPage.js:192-288

1. Click the button
2. `isPending` in `IndexPage.js` is `true`

However, `isPending` in `App.js` is `false`.

Expected: `isPending` in `App.js` is also `true`.
if (__DEV__) {
    hookTypesUpdateIndexDev = -1;
    
    ignorePreviousDependencies =
      current !== null && current.type !== workInProgress.type;
  }
  const children = renderWithHooksAgain(
    workInProgress,
    Component,
    props,
    secondArg,
  );
  finishRenderingHooks(current, workInProgress);
  return children;
}
function renderWithHooksAgain<Props, SecondArg>(
  workInProgress: Fiber,
  Component: (p: Props, arg: SecondArg) => any,
  props: Props,
  secondArg: SecondArg,
): any {