Master react (#19439)

chore(react): react rc3 release

packages/react/src/components/createControllerComponent.tsx

@@ -34,12 +34,15 @@ export const createControllerComponent = <OptionsType extends object, OverlayTyp
 
     async componentDidMount() {
       const { isOpen } = this.props;
-      // TODO
       if (isOpen as boolean) {
         this.present();
       }
     }
 
+    componentWillUnmount() {
+      if (this.overlay) { this.overlay.dismiss(); }
+    }
+
     async componentDidUpdate(prevProps: Props) {
       if (prevProps.isOpen !== this.props.isOpen && this.props.isOpen === true) {
         this.present(prevProps);