[Cascader 级联选择器] 全路径模式的级联选择器，取消全部子选项的选择，原来的三个子选项，变成一个子选项了 #1258

	# force copy from tencent/tdesign
	name: Issue Help wanted
	on:
	issues:
	types:
	- labeled
	jobs:
	add-comment:
	if: github.event.label.name == 'help wanted'
	runs-on: ubuntu-latest
	permissions:
	issues: write
	steps:
	- name: Add comment
	uses: peter-evans/create-or-update-comment@v1
	with:
	issue-number: ${{ github.event.issue.number }}
	body: \|
	任何人都可以处理此问题。
	请务必在您的 `pull request` 中引用此问题。 :sparkles:
	感谢你的贡献! :sparkles:
	reactions: heart

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