[AutoComplete]Fix Clear Value Issue

Removed setting the searchText state from the menu close function and moved the newRequest event after the menu close so that it can be used to overwrite the selected value.

Closes mui#4213

src/AutoComplete/AutoComplete.js

@@ -260,15 +260,13 @@ class AutoComplete extends Component {
     const chosenRequest = dataSource[index];
     const searchText = typeof chosenRequest === 'string' ? chosenRequest : chosenRequest.text;
 
-    this.props.onNewRequest(chosenRequest, index);
-
     this.timerTouchTapCloseId = setTimeout(() => {
-      this.setState({
-        searchText: searchText,
-      });
       this.close();
       this.timerTouchTapCloseId = null;
     }, this.props.menuCloseDelay);
+
+    this.setState({searchText: searchText});
+    this.props.onNewRequest(chosenRequest, index);
   };
 
   handleEscKeyDown = () => {