Takes extras props directly from DashWrapper rest props

Author: T4rk1n

@plotly/dash-test-components/src/components/AddPropsComponent.js

@@ -7,9 +7,9 @@ const AddPropsComponent = (props) => {
 
     return (
         <div id={id}>
-            {React.cloneElement(children, { extras: {
+            {React.cloneElement(children, { 
                 receive: `Element #${id} pass`,
-            }})}
+            })}
         </div>
     );
 };

components/dash-core-components/src/components/ConfirmDialogProvider.react.js

@@ -23,9 +23,7 @@ export default class ConfirmDialogProvider extends React.Component {
         // Will lose the previous onClick of the child
         const wrapClick = child =>
             React.cloneElement(child, {
-                extras: {
-                    onClick: () => setProps({displayed: true}),
-                },
+                onClick: () => setProps({displayed: true}),
             });
 
         return (

dash/dash-renderer/src/wrapper/DashWrapper.tsx

@@ -39,17 +39,13 @@ type DashWrapperProps = {
      * Path of the component in the layout.
      */
     componentPath: DashLayoutPath;
-    /**
-     * extras props to be merged with the dash props from the store.
-     */
-    extras?: any;
     _dashprivate_error?: any;
 };
 
 function DashWrapper({
     componentPath,
-    extras,
-    _dashprivate_error
+    _dashprivate_error,
+    ...extras
 }: DashWrapperProps) {
     const dispatch = useDispatch();