fix: fix the new notice style

[add-uos]

hide the file path after the screenshot is completed.

Log: hide the file path after the screenshot is completed. Task: https://pms.uniontech.com/task-view-356211.html

[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 在main_window.cpp中，saveBody变量的命名可能会引起误解，因为它实际上是一个翻译字符串，而不是一个变量。建议使用更清晰的命名，如saveBodyTranslation。
• 在record_process.cpp中，tr("Recording finished")的翻译字符串被错误地使用了两次，应该使用tr("Screen Capture")来确保翻译的一致性。
• 在translations/deepin-screen-recorder_zh_CN.ts中，新增的<message>元素应该包含<source>属性，以便于理解其目的。
• 翻译字符串截图完成和截图完成，文件已保存之间的差异可能表明需要进一步的澄清或验证，以确保翻译的准确性。

是否建议立即修改: 是

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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

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[add-uos]

/merge