feat: pull the message list after sending the message successfully #918 (#1364)

### What problem does this PR solve?

feat: pull the message list after sending the message successfully #918

### Type of change


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

web/src/pages/flow/canvas/index.tsx

@@ -133,10 +133,12 @@ function FlowCanvas({ chatDrawerVisible, hideChatDrawer }: IProps) {
         visible={drawerVisible}
         hideModal={hideDrawer}
       ></FlowDrawer>
-      <ChatDrawer
-        visible={chatDrawerVisible}
-        hideModal={hideChatDrawer}
-      ></ChatDrawer>
+      {chatDrawerVisible && (
+        <ChatDrawer
+          visible={chatDrawerVisible}
+          hideModal={hideChatDrawer}
+        ></ChatDrawer>
+      )}
     </div>
   );
 }