[Fix][UI] Fix issue with treemap depth in workflow relationships. (#10229)

* [Fix][UI] Fix issue with treemap depth in workflow relationships.

* [Fix][UI] Fix issue with treemap depth in workflow relationships.

dolphinscheduler-ui/src/components/chart/modules/Tree.tsx

@@ -62,7 +62,7 @@ const TreeChart = defineComponent({
           symbolSize: 18,
           edgeShape: 'polyline',
           edgeForkPosition: '63%',
-          initialTreeDepth: 3,
+          initialTreeDepth: 'auto',
           lineStyle: {
             width: 3
           },