SVC Agent: more info

**Your phone model**: SM-A315G

**Packages documentation to update:**

```
com.samsung.android.svcagent
```

## Documentation Change

### com.samsung.android.svcagent

### Current description

> Impossible to know what this system app does. It has full access to internet network anyway.
> Safe to remove

### Proposed description

> Impossible to know what this system app does. It has full access to internet network. Its APK implies it has a UI, but it doesn't have any activities. It occasionally runs a `MainService` for many consecutive hours

在程式碼儲存庫中找到套件 'com.samsung.android.svcagent' 的文件檔案。更新描述以符合提議的文字，確保更改準確並遵循專案的格式。透過檢查檔案位置並檢視任何相關的文件指南來驗證更新。

由索引模型根據 Issue 內容生成。