Stencil插件的搜索功能，高度没有自适应

[rcx0113]

Describe the bug

Stencil插件的搜索,设置了 stencilGraphHeight: 0,高度自适应，但是搜索的结果高度没有自适应，有空白区域

Your Example Website or App

https://x6.antv.antgroup.com/zh/examples/showcase/practices/#flowchart

Steps to Reproduce the Bug or Issue

官网流程图案例就可以复现，
const stencil = new Stencil({
title: '流程图',
target: graph,
stencilGraphWidth: 200,
stencilGraphHeight: 0,
collapsable: true,
search(cell, keyword) {
return cell.shape.indexOf(keyword) !== -1
},
groups: [
{
title: '基础流程图',
name: 'group1',
},
{
title: '系统设计图',
name: 'group2',
},
],
layoutOptions: {
columns: 1,
columnWidth: 80,
rowHeight: 55,
},
})

为了明显复现，可以将分组改为
stencil.load([r1, r2, r3, r4, r5, r6], 'group1')
stencil.load([r1, r2, r3, r4,], 'group2')

Expected behavior

理想状态搜索高度页可以子适应，而不是出现一片空白

Screenshots or Videos

Platform

• OS: [e.g. macOS]
• Browser: [e.g. Chrome]
  "@antv/x6": "^2.15.6",

Additional context

No response

[x6-bot]

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