fix(label): correct label selector parameter handling and test case

[BQXBQX]

Checklist

• npm test passes

• commit message follows commit guidelines

Description of change

• Ensure label selector correctly filters data at specified index
• Maintain consistent test behavior with original requirement

[hustcc]

• fixed 数据标签 selector 方法入参异常 #6020

[coveralls]

Pull Request Test Coverage Report for Build 12143367375

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

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Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.007%) to 86.66%

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Totals
Change from base Build 12135593436:	0.007%
Covered Lines:	10610
Relevant Lines:	11865

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💛 - Coveralls

[hustcc]

tests/data/indices.json 这个文件是必须加的吗？看看当前仓库中是否有这个数据，我记得 demo 中是有用到这个数据 indices.csv。