[Bug]: type Element used in events is missing methods #6827

Describe the bug / 问题描述

For example, methods in BaseNode like: drawKeyShape(), getIconStyle()​​, and getKeyStyle() don't exist on interface Node.

---

In this branch, I added:

type TargetElement = BaseNode | BaseEdge | BaseCombo;

Then I replaced references to Element with TargetElement.

https://github.com/Crystal-RainSlide/G6/tree/refactor-TargetElement

I can start a PR if you accept this solution. I'ill add the missing references if you find any.

Reproduction link / 复现链接

No response

Steps to Reproduce the Bug or Issue / 重现步骤

new G6.Graph({
  // other options...

  behaviors: [
    /** @type {import("@antv/g6").ClickSelectOptions} */
    ({
      type: "click-select",
      onClick: ({ target }) => {
        if ("getPorts" in target) { // Narrow target down from (Document | Element) to (Node | Combo)
          // TypeScript Error: target (Node | Combo) has no "drawKeyShape" method
          console.log(target.drawKeyShape);
          // Actually can log the method without type error
        }
      },
    }),
  ],

});

Version / 版本

🆕 5.x

OS / 操作系统

• macOS
• Windows
• Linux
• Others / 其他

Browser / 浏览器

• Chrome
• Edge
• Firefox
• Safari (Limited support / 有限支持)
• IE (Nonsupport / 不支持)
• Others / 其他