Fix object being selected for insertion on scene after double click #574 (#575)

Clicking the canvas after opening and closing the edit object window via double click no longer adds an object

newIDE/app/src/ObjectsList/ObjectRow.js

@@ -163,6 +163,7 @@ class ThemableObjectRow extends React.Component {
           if (this.props.editingName) return;
 
           this.props.onEdit(object);
+          this.props.onObjectSelected('');
         }}
       />
     );