feat: duplicate node #918 (#1136)

### What problem does this PR solve?
feat: duplicate node #918


### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/flow/index.tsx

@@ -27,7 +27,6 @@ function RagFlow() {
           <FlowHeader showChatDrawer={showChatDrawer}></FlowHeader>
           <Content style={{ margin: 0 }}>
             <FlowCanvas
-              sideWidth={collapsed ? 0 : 200}
               chatDrawerVisible={chatDrawerVisible}
               hideChatDrawer={hideChatDrawer}
             ></FlowCanvas>