Tree view hover issue when using polyline with focus: descendant

### Version

5.5.1

### Link to Minimal Reproduction

https://echarts.apache.org/examples/en/editor.html?c=tree-polyline

### Steps to Reproduce

In the example chart provided, you can see the problematic behavior.

### Current Behavior

When hovering a node using the regular edges with focus: descendant, all nodes and edges below are highlighted. But, if you use the edgeShape: polyline with the same focus: descendant, only the child nodes and their edges are highlighted, but the edges to the children are left out.

### Expected Behavior

All edges below the hovered node should be highlighted.

### Environment

_No response_

### Any additional comments?

_No response_