## Summary
This PR updates getChangedHooksIndices to account for the fact that
useSyncExternalStore internally mounts two hooks, while DevTools should
treat it as a single user-facing hook.
It introduces a helper isUseSyncExternalStoreHook to detect this case
and adjust iteration so the extra internal hook is skipped when counting
changes.
Before:
https://github.com/user-attachments/assets/0db72a4e-21f7-44c7-ba02-669a272631e5
After:
https://github.com/user-attachments/assets/4da71392-0396-408d-86a7-6fbc82d8c4f5
## How did you test this change?
I used this component to reproduce this issue locally (I followed
instructions in `packages/react-devtools/CONTRIBUTING.md`).
```ts
function Test() {
// 1
React.useSyncExternalStore(
() => {},
() => {},
() => {},
);
// 2
const [state, setState] = useState('test');
return (
<>
<div
onClick={() => setState(Math.random())}
style={{backgroundColor: 'red'}}>
{state}
</div>
</>
);
}
```
39c6545cef