fix: Dragging to a read-only directory or a read-only USB drive with the mouse status disabled

[liyigang1]

Dragging to a read-only directory or a read-only USB drive with the mouse status disabled

Log: Dragging to a read-only directory or a read-only USB drive with the mouse status disabled Bug: https://pms.uniontech.com/bug-view-254291.html

[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 在DragDropHelper::dragMove函数中增加了对目标可写性的检查，这是一个好的做法，可以防止不应该被移动或复制文件被移动。

是否建议立即修改:

• 是

Syntax and logical errors:

• 无明显的语法或逻辑错误。

Code refactoring and quality:

• 考虑为新的条件检查添加注释说明为什么需要检查可写性，以便其他开发者理解这一变更的目的。

Performance optimization:

• 检查hoverFileInfo->isAttributes(OptInfoType::kIsWritable)可能会有性能开销，如果这个方法调用很频繁，可以考虑缓存结果。

Security vulnerabilities:

• 确保hoverFileInfo是安全的，不会因为传入的无效信息而引发安全问题。

Best practices:

• 确保代码遵循项目的编码规范，例如变量命名和代码格式化。
• 如果checkTargetEnable和isAttributes方法有复杂的逻辑，建议将它们的结果缓存起来，以避免重复计算。

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: liyigang1, max-lvs

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[liyigang1]

/merge