fix(components): [tree] fix setCurrentKey setCurrentNode emit

[gjfei]

Please make sure these boxes are checked before submitting your PR, thank you!
fix #8855

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• Make sure you are merging your commits to dev branch.
• Add some descriptions and refer to relative issues for your PR.

[pull-request-triage]

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[github-actions]

Hello @gjfei, thank you for contributing to element-plus, please see our guideline to see how to make contribution

[github-actions]

[github-actions]

🧪 Playground Preview: https://element-plus.run/?pr=8881
Please comment the example via this playground if needed.

[holazz]

Hi, I left a few comments for your consideration.

[holazz]

One more suggestion, you can add a keyword before the issues link in the description, such as fix, close, etc., and no need to link issues in the title.

[gjfei]

还有一个建议，可以在description的issues链接前加一个关键词，比如fix、close等，标题中不需要链接issues。

好的

[gjfei]

@iamkun 现在都没人处理这些pr 了?

[holazz]

@iamkun 现在都没人处理这些pr 了?

我也有一些打开了好久的 PR，可能团队成员不都是全职在维护这个项目吧 🤔

[gjfei]

@iamkun 现在都没人处理这些pr 了?

我也有一些打开了好久的 PR，可能团队成员不都是全职在维护这个项目吧 🤔

我已经有点受不了，既然不打算维护了，就把权限给到一些愿意维护的人，这样算啥事情

[holazz]

@iamkun 现在都没人处理这些pr 了?

我也有一些打开了好久的 PR，可能团队成员不都是全职在维护这个项目吧 🤔

我已经有点受不了，既然不打算维护了，就把权限给到一些愿意维护的人，这样算啥事情

PR 应该都是要经过多个人审查通过后才可以合并，所以会慢些，别着急