React 18 Support for Atlaskit Components

[karlhorky]

I opened a new topic about React 19 support here, for anyone looking for it:

React 19 Support for Atlaskit Components

Similar to the React 18 topic (see link in following replies below), it would be great to get support for React 19 in the @atlastkit/* components. Right now, various TypeScript errors occur, because the JSX type needs to be imported - the global namespace has been removed: Error: components/widgets/AtlassianMutationError.tsx(20,13): error TS2786: 'ErrorMessage' cannot be used as a JSX component. Its type '({ children, testId }: MessageProps) => Element' is not a valid JSX element type. T…