Remove findDOMNode

[ethanshealey]

Remove findDOMNode (React 19 compatibility)

ReactDOM.findDOMNode was removed in React 19. The useIsFocusVisible hook
was calling it to resolve the DOM node from a ref callback, which breaks
entirely in React 19.

The fix is straightforward — ref callbacks already receive the DOM node as
instance, so findDOMNode was never doing anything useful here. Dropping
it and using instance directly is equivalent behavior.

Fixes the following crash when running React 19:
TypeError: reactDom.findDOMNode is not a function

[ethanshealey]

Hello @arturbien! This small fix is critical for those on React 19+ using React95

For anyone else running into this issue, you can create a patch as a temporary fix:

diff --git a/node_modules/react95/dist/common/hooks/useIsFocusVisible.js b/node_modules/react95/dist/common/hooks/useIsFocusVisible.js
index 6a14447..cbe8726 100644
--- a/node_modules/react95/dist/common/hooks/useIsFocusVisible.js
+++ b/node_modules/react95/dist/common/hooks/useIsFocusVisible.js
@@ -3,7 +3,6 @@
 Object.defineProperty(exports, '__esModule', { value: true });
 
 var React = require('react');
-var reactDom = require('react-dom');
 
 let hadKeyboardEvent = true;
 let hadFocusVisibleRecently = false;
@@ -78,7 +77,7 @@ function handleBlurVisible() {
 }
 function useIsFocusVisible() {
   const ref = React.useCallback((instance) => {
-    const node = reactDom.findDOMNode(instance);
+    const node = instance;
     if (node != null) {
       prepare(node.ownerDocument);
     }
diff --git a/node_modules/react95/dist/common/hooks/useIsFocusVisible.mjs b/node_modules/react95/dist/common/hooks/useIsFocusVisible.mjs
index afef844..5160830 100644
--- a/node_modules/react95/dist/common/hooks/useIsFocusVisible.mjs
+++ b/node_modules/react95/dist/common/hooks/useIsFocusVisible.mjs
@@ -1,5 +1,4 @@
 import { useCallback } from 'react';
-import { findDOMNode } from 'react-dom';
 
 let hadKeyboardEvent = true;
 let hadFocusVisibleRecently = false;
@@ -74,7 +73,7 @@ function handleBlurVisible() {
 }
 function useIsFocusVisible() {
   const ref = useCallback((instance) => {
-    const node = findDOMNode(instance);
+    const node = instance;
     if (node != null) {
       prepare(node.ownerDocument);
     }