fix: 导致用户自己设置的dataTransfer.setData('text/plain')失效

[hxdyj]

Types of changes

• New feature
• Bug fix
• Enhancement
• Documentation change
• Coding style change
• Component style change
• Refactoring
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Background and context

在tree onDragStart 事件 dataTransfer.setData('text/plain')设置不上

Solution

emit之前去设置node的dataTransfer.setData

How is the change tested?

Changelog

Component	Changelog(CN)	Changelog(EN)	Related issues
Tree	修复 onDragStart dataTransfer.setData 不生效

Checklist:

• Test suite passes (npm run test)
• Provide changelog for relevant changes (e.g. bug fixes and new features) if applicable.
• Changes are submitted to the appropriate branch (e.g. features should be submitted to feature branch and others should be submitted to main branch)

Other information

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