优化桑基图标签显示

@@ -97,6 +97,12 @@ const setChartsOption = () => {
         bottom: 20,
         bottom: 20,
         draggable: false,
         draggable: false,
         left: 50,
         left: 50,
+        emphasis: {
+          focus: 'trajectory'
+        },
+        labelLayout: {
+          hideOverlap: true,
+        },
         right: 100,
         right: 100,
         label: {
         label: {
           fontSize: 10,
           fontSize: 10,