message: fix(type): add type definition for onPaneClick
diff: @@ -50,7 +50,7 @@ export interface ReactFlowProps extends Omit<HTMLAttributes<HTMLDivElement>, 'on
  onMoveStart?: (flowTransform?: FlowTransform) => void;
  onMoveEnd?: (flowTransform?: FlowTransform) => void;
  onSelectionChange?: (elements: Elements | null) => void;
  - onPaneClick?: () => void;
  + onPaneClick?: (evt: MouseEvent) => void;
  nodeTypes: NodeTypesType;
  edgeTypes: EdgeTypesType;
  connectionLineType: ConnectionLineType;
  