chore: add Breaks relation with older dde-shell versions

1. Added Breaks field to debian/control for dde-shell (<< 2.0.39)
2. This ensures compatibility by preventing installation of incompatible
older versions of dde-shell
3. The Breaks directive enforces dependency resolution during package
updates

Log: N/A (infrastructure change, no user-facing impact)

Influence:
1. Verify package installation succeeds with dde-shell >= 2.0.39
2. Confirm installation is blocked with dde-shell < 2.0.39

chore: 添加与旧版本 dde-shell 的 Breaks 关系

1. 在 debian/control 中添加 dde-shell (<< 2.0.39) 的 Breaks 字段
2. 确保兼容性，防止安装不兼容的旧版本 dde-shell
3. Breaks 指令在软件包更新期间强制执行依赖关系解析

Log: 无（基础设施变更，无用户可见影响）

Influence:
1. 验证安装了 dde-shell >= 2.0.39 时软件包安装成功
2. 确认安装了 dde-shell < 2.0.39 时安装被阻止

Author: wjyrich

debian/control

@@ -93,6 +93,8 @@ Depends:
  qt6-declarative-dev,
  qt6-tools-dev,
  ${misc:Depends},
+Breaks:
+ dde-shell (<< 2.0.39),
 Description: DDE Shell devel library
  DDE Shell is a plugin system that integrates plugins developed based on this plugin system into DDE.