feat: add i18n support for notification clear button

[wjyrich]

1. Added translation handling for NotifyItemContent.qml in CMakeLists.txt
2. Replaced SettingActionButton with AnimationSettingButton for better UX
3. Added text label "Clear alone" to the close button for accessibility
4. Anchored close button to the right side for proper layout
5. Created translation files for 20+ languages including Chinese variants
6. Pre-filled Chinese translations (zh_CN, zh_HK, zh_TW) while leaving others unfinished

This change enables internationalization support for the notification clear button, making the interface more user-friendly for global users. The button now has proper text labeling and improved positioning.

feat: 为通知清除按钮添加国际化支持

1. 在 CMakeLists.txt 中添加对 NotifyItemContent.qml 的翻译处理
2. 将 SettingActionButton 替换为 AnimationSettingButton 以提升用户体验
3. 为关闭按钮添加"清除单个"文本标签以提高可访问性
4. 将关闭按钮锚定到右侧以实现正确布局
5. 创建包含中文变体在内的20多种语言翻译文件
6. 预填充中文翻译（简体、香港、台湾），其他语言留空待翻译

此更改使通知清除按钮支持国际化，为全球用户提供更友好的界面。按钮现在具有
适当的文本标签和改善的定位。

Pms: BUG-283587

Summary by Sourcery

Add internationalization support for the notification clear button and enhance its layout and UX

New Features:

• Extract translations from NotifyItemContent.qml via CMake
• Add 'Clear alone' text label with qsTr for the clear button
• Provide translation templates for 20+ languages with Chinese variants prefilled

Enhancements:

• Replace SettingActionButton with AnimationSettingButton for improved UX
• Anchor the clear button to the right for proper layout and accessibility

Build:

• Update CMakeLists.txt to handle QML translations for NotifyItemContent.qml

[sourcery-ai]

Reviewer's Guide

This PR adds internationalization support for the notification clear button by updating the QML component for accessibility and UX, integrating translation handling in the build system, and scaffolding TS files for 20+ languages with prefilled Chinese variants.

Class diagram for updated NotifyItemContent QML component

classDiagram
    class NotifyItemContent {
      +Loader closeBtn
      +AnimationSettingButton replaces SettingActionButton
      +text: qsTr("Clear alone")
      +anchors.right: parent.right
    }
    NotifyItemContent --> AnimationSettingButton

Loading

File-Level Changes

Change	Details	Files
Enhanced NotifyItemContent QML for i18n and UX improvements	Imported notificationcenter module for translation support Anchored close button to parent’s right side Swapped SettingActionButton with AnimationSettingButton Added qsTr("Clear alone") label for accessibility	panels/notification/plugin/NotifyItemContent.qml
Integrated translation handling in build configuration	Added ds_handle_package_translation entry for NotifyItemContent.qml	panels/notification/CMakeLists.txt
Created translation scaffolding for 20+ languages	Generated TS files for each locale under translations directory Prefilled Chinese (zh_CN, zh_HK, zh_TW) translations, left others unfinished	panels/notification/translations/*.ts

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[sourcery-ai]

Hey there - I've reviewed your changes - here's some feedback:

• Remove the unused import org.deepin.ds.notificationcenter from NotifyItemContent.qml to keep dependencies minimal.
• Revisit the 'Clear alone' text for clarity—consider renaming it to something like 'Clear notification' or 'Dismiss this' to improve user understanding.
• Verify that switching to AnimationSettingButton preserves the original focus and hover behaviors of the close button across all notification scenarios.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- Remove the unused import org.deepin.ds.notificationcenter from NotifyItemContent.qml to keep dependencies minimal.
- Revisit the 'Clear alone' text for clarity—consider renaming it to something like 'Clear notification' or 'Dismiss this' to improve user understanding.
- Verify that switching to AnimationSettingButton preserves the original focus and hover behaviors of the close button across all notification scenarios.

## Individual Comments

### Comment 1
<location> `panels/notification/plugin/NotifyItemContent.qml:70` </location>
<code_context>
                     id: closeBtn
                     objectName: "closeNotify-" + root.appName
                     icon.name: "clean-alone"
+                    text: qsTr("Clear alone")
                     padding: 2
                     forcusBorderVisible: visualFocus
</code_context>

<issue_to_address>
**suggestion:** Review the phrasing of 'Clear alone' for clarity.

Consider using a more descriptive label, such as 'Clear this notification', to improve clarity unless 'Clear alone' is needed for consistency.

```suggestion
                    text: qsTr("Clear this notification")
```
</issue_to_address>

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[18202781743]

AnimationSettingButton 应该可以移动到plugin中，
center依赖plugin，而不应该plugin依赖center，
这里的清除按钮也要改成这种么，

[wjyrich]

是的

[18202781743]

这里获取所有的文件吧，免得之后要单个加需要翻译的文件，

[BLumia]

新资源需要加到 .tx/transifex.yaml 里