[Bug]: WebGL engine rendering error

### Describe the bug / 问题描述

在官网中使用webGL引擎 点击节点 节点应该渲染选中的状态 但是有时候渲染出来的效果是错的
https://g6.antv.antgroup.com/examples/behavior/select/#click
代码
import { Graph } from '@antv/g6';
import { Renderer as WebGLRenderer } from '@antv/g-webgl'
const data = {
nodes: [
{ id: 'node1', style: { x: 150, y: 250 } },
{ id: 'node2', style: { x: 350, y: 250 } },
{ id: 'node3', style: { x: 250, y: 250 } },
],
edges: [],
};

const graph = new Graph({
data,
renderer: () => new WebGLRenderer(),
behaviors: [{ type: 'click-select', multiple: true, trigger: ['shift'] }, 'drag-element'],
autoFit: 'center',
});

graph.render();

const prompt = document.createElement('div');
prompt.innerHTML = `👉 Press SHIFT to enable multiple selection`;
prompt.style.position = 'absolute';
const container = document.getElementById('container');
container.appendChild(prompt);

未点击时
点击时
期望的效果

### Reproduction link / 复现链接

https://g6.antv.antgroup.com/examples/behavior/select/#click

### Steps to Reproduce the Bug or Issue / 重现步骤

打开官网https://g6.antv.antgroup.com/examples/behavior/select/#click
将下列代码复制进去

-------------代码分割线----------------
import { Graph } from '@antv/g6';
import { Renderer as WebGLRenderer } from '@antv/g-webgl'
const data = {
nodes: [
{ id: 'node1', style: { x: 150, y: 250 } },
{ id: 'node2', style: { x: 350, y: 250 } },
{ id: 'node3', style: { x: 250, y: 250 } },
],
edges: [],
};

const graph = new Graph({
data,
renderer: () => new WebGLRenderer(),
behaviors: [{ type: 'click-select', multiple: true, trigger: ['shift'] }, 'drag-element'],
autoFit: 'center',
});

graph.render();

const prompt = document.createElement('div');
prompt.innerHTML = `👉 Press SHIFT to enable multiple selection`;
prompt.style.position = 'absolute';
const container = document.getElementById('container');
container.appendChild(prompt);
-------------代码分割线----------------

点击节点 就复现了

### Version / 版本

🆕 5.x

### OS / 操作系统

- [ ] macOS
- [x] Windows
- [ ] Linux
- [ ] Others / 其他

### Browser / 浏览器

- [x] Chrome
- [ ] Edge
- [ ] Firefox
- [ ] Safari (Limited support / 有限支持)
- [ ] IE (Nonsupport / 不支持)
- [ ] Others / 其他

Reproduce the issue from the linked G6 selection example using the shown Graph configuration and WebGLRenderer entry point. Compare the incorrect and expected node-selection rendering after clicking a node, then verify that selection states render correctly in the same Chrome and Windows setup.

Written by the indexing model from the issue text.