fix: Copy the file from FTP to the desktop and prompt that the file already exists on the desktop, but it does not actually exist on the desktop

[liyigang1]

Using the kstandardcopyname attribute of dfileinfo to obtain a null value resulted in using the kstandardfilename attribute of dfileinfo

Log: Copy the file from FTP to the desktop and prompt that the file already exists on the desktop, but it does not actually exist on the desktop
Bug: https://pms.uniontech.com/bug-view-262105.html

[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 在docutfilesworker.cpp中，将DFileInfo::AttributeID::kStandardCopyName更改为DFileInfo::AttributeID::kStandardFileName可能会影响文件操作的预期行为，需要确认这是否是预期的更改。
• 在fileoperatebaseworker.cpp和docopyfromtrashfilesworker.cpp中，同样将DFileInfo::AttributeID::kStandardCopyName更改为DFileInfo::AttributeID::kStandardFileName，需要验证这是否符合预期的文件属性更改。
• 在dorestoretrashfilesworker.cpp中，将DFileInfo::AttributeID::kStandardCopyName更改为DFileInfo::AttributeID::kStandardFileName，需要验证这是否符合预期的文件属性更改，以及是否会影响文件恢复操作的执行。

是否建议立即修改:

• 是，需要确保这些更改是必要的，并且不会引入新的错误。如果这些更改不是预期的，应立即回退这些更改。

[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