fix(display): migrate concat screen management to daemon#1142
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Add DBus method SetConcatScreen and manage RANDR Monitor via XCB/RANDR protocol directly. The daemon owns the concat screen lifecycle: auto cleanup on mode switch, hotplug, and layout changes. 新增 DBus 接口 SetConcatScreen，通过 XCB/RANDR 协议直接管理拼接。daemon 接管拼接生命周期：模式切换时自动清理，热插拔/布局变更时退出。 Log: 将跨屏拼接逻辑迁移至dde-daemon PMS: BUG-363737 Influence: 1.开启跨屏拼接后，使用系统快捷键切换到其他多屏模式，能自动退出拼接； 2.控制中心切换多屏模式，开/关跨屏拼接，状态正确； 3.热插拔显示器、更改显示器坐标、自动退出拼接
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Add DBus method SetConcatScreen and manage RANDR Monitor via XCB/RANDR protocol directly. The daemon owns the concat screen lifecycle: auto cleanup on mode switch, hotplug, and layout changes.
新增 DBus 接口 SetConcatScreen，通过 XCB/RANDR 协议直接管理拼接。daemon 接管拼接生命周期：模式切换时自动清理，热插拔/布局变更时退出。
Log: 将跨屏拼接逻辑迁移至dde-daemon
PMS: BUG-363737
Influence: 1.开启跨屏拼接后，使用系统快捷键切换到其他多屏模式，能自动退出拼接；
2.控制中心切换多屏模式，开/关跨屏拼接，状态正确；
3.热插拔显示器、更改显示器坐标、自动退出拼接