fix: catch error and do not jump in split page

Signed-off-by: suzhou <[email protected]>

public/pages/SplitIndex/components/SplitIndexForm/SplitIndexForm.tsx

@@ -49,10 +49,10 @@ export default class SplitIndexForm extends Component<SplitIndexComponentProps>
     }
     try {
       await this.props.onSplitIndex(targetIndex, others);
+      this.props.onCancel();
     } catch (err) {
       // no need to log anything since getIndexSettings will log the error
     }
-    this.props.onCancel();
   };
 
   render() {