修复拖拽不符合要求的文件，仍然调用beforeUpload

[meiyuanReact]

Summary by CodeRabbit

• 修复问题
  • 修正了上传文件时的筛选逻辑，确保在仅允许单文件上传时，只会上传通过类型校验的第一个文件。

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[coderabbitai]

Walkthrough

本次更改调整了在处理数据传输上传时对可接受文件的筛选逻辑。现在，当不允许多选文件时，将从已通过类型筛选的文件数组中选择第一个文件，而不是原始文件数组，确保文件类型过滤优先于数量限制。

Changes

文件/文件组	变更摘要
src/AjaxUploader.tsx	修改了文件筛选逻辑，先按类型过滤，再应用数量限制。

Poem

兔子跳跃键盘前，
代码筛选更周全。
先查类型后计数，
上传文件不混乱。
逻辑清晰如晨露，
🐇为你鼓掌欢！

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src/AjaxUploader.tsx

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ESLint: 8.57.1

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The config "prettier" was referenced from the config file in "/.eslintrc.js".

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📥 Commits

Reviewing files that changed from the base of the PR and between f1e3790 and 6b3d0d3.

📒 Files selected for processing (1)

• src/AjaxUploader.tsx (1 hunks)

🔇 Additional comments (1)

src/AjaxUploader.tsx (1)

87-89: 优秀的修复！确保文件类型过滤优先于数量限制。

这个变更修复了一个重要的逻辑错误。之前的实现在multiple === false时会从原始的files数组中取第一个文件，这可能导致不符合accept条件的文件仍然被处理并调用beforeUpload。

修改后的逻辑确保：

1. 首先通过attrAccept过滤文件类型
2. 然后再应用数量限制（当multiple === false时取第一个）
3. 避免了不符合要求的文件被意外处理的问题

这个修复完全符合PR目标，解决了拖拽不符合要求的文件仍然调用beforeUpload的问题。

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[afc163]

需要测试用例。

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.10%. Comparing base (f1e3790) to head (6b3d0d3).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #627   +/-   ##
=======================================
  Coverage   89.10%   89.10%           
=======================================
  Files           6        6           
  Lines         303      303           
  Branches       80       80           
=======================================
  Hits          270      270           
  Misses         33       33           

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