React.StrictMode throws warning because of findDOMNode use

[kodai3]

Is your feature request related to a problem? Please describe 🙏

react-dom findDOMNode is derecated and will be removed in next major version update.
facebook/react#14357
facebook/react#28926

Because of this it throws warning.

Warning: findDOMNode is deprecated in StrictMode. findDOMNode was passed an instance of StyledComponent which is inside StrictMode. Instead, add a ref directly to the element you want to reference.

Now React 19 is released as beta.
This package will block us from upgrading.

Describe the solution you'd like 🤔

We have to update the logic without using them.
https://react.dev/reference/react-dom/findDOMNode#finding-the-root-dom-node-of-a-class-component