pref(flowEditor): 显式定义ReactFlow的id,避免出现背景样式丢失的问题

src/pages/flowEditor/index.tsx

@@ -614,6 +614,7 @@ const FlowEditor: React.FC = () => {
     <div ref={reactFlowWrapper} style={{ width: '100%', height: '100%', position: 'relative' }}
          onContextMenu={(e) => e.preventDefault()}>
       <ReactFlow
+        id={new Date().getTime().toString()}
         nodes={nodes}
         edges={edges}
         nodeTypes={nodeTypes}