Hello Matej,
We are looking forward at adding the `onRowClick` property for a future version of the `@progress/kendo-react-grid` package.
It is currently possible to call the `onRowClick` handler without this property, by utilising the React Context API and passing the callback through a `Context.Provider`
I have prepared the following stackblitz example, which demonstrates calling the `onRowClick` callback through the Context API, when your custom cell is defined outside of the App component:
https://stackblitz.com/edit/react-4v6l81-gngdtt
Please let me know if you need further assistance.
Regards,
Kiril
Progress Telerik