fix(react): handle undefined attributes better, fixes #19563, #19580 (#19588)

packages/react-router/src/ReactRouter/ViewManager.tsx

@@ -1,14 +0,0 @@
-import * as React from 'react';
-
-import { deprecationWarning } from '../utils';
-
-export class ViewManager extends React.Component<{}, {}> {
-
-  componentDidMount() {
-    deprecationWarning('As of @ionic/react RC2, ViewManager is no longer needed and can be removed. This component is now deprecated will be removed from @ionic/react final.');
-  }
-
-  render() {
-    return this.props.children;
-  }
-}

packages/react-router/src/ReactRouter/index.ts

@@ -1,3 +1,2 @@
 
 export { IonReactRouter } from './Router';
-export { ViewManager } from './ViewManager';