dillon1000/react

fix[react-devtools]: fixed timeline profiler tests (#31261)

Fixes tests against React 18 after
https://github.com/facebook/react/pull/31154:
- Set `supportsTimeline` to true for `Store`.
- Execute `store.profilerStore.startProfiling` after `legacyRender`
import, because this is where `react-dom` is imported and renderer is
registered. We don't yet propagate `isProfiling` flag to newly
registered renderers, when profiling already started see:

https://github.com/facebook/react/blob/d5bba18b5d81f234657586865248c5b6849599cd/packages/react-devtools-shared/src/hook.js#L203-L204