If you have more than one copy of React DevTools installed and enabled (e.g. the version in the Chrome store and a locally built version) they can interfere with each other.

DevTools should detect this case and warn by showing a dialog in the DevTools UI and/or by logging to the console.

Note that we _should not warn_ if a related tool like Fast Refresh is present, only another copy of DevTools.
overrideTab?: TabID,
  
  
  
  componentsPortalContainer?: Element,
  profilerPortalContainer?: Element,
  
  
  
  fetchFileWithCaching?: ?FetchFileWithCaching,
  
  hookNamesModuleLoaderFunction?: ?HookNamesModuleLoaderFunction,
|};
const componentsTab = {
  id: ('components': TabID),
  icon: 'components',
  label: 'Components',
  title: 'React Components',
};
const profilerTab = {
  id: ('profiler': TabID),
  icon: 'profiler',
  label: 'Profiler',
  title: 'React Profiler',
};
const tabs = [componentsTab, profilerTab];
export default function DevTools({