fix: exclude qt6-webengine-dev on mips architectures

Exclude qt6-webengine-dev from Build-Depends on mipsel and mips64el
architectures because Qt WebEngine does not support these MIPS
architectures. This prevents build failures when building on MIPS
systems.

Influence:
1. Test building on MIPS systems to verify the package builds
successfully
2. Verify that builds on other architectures still include qt6-
webengine-dev
3. Check that the exclusion syntax is correctly parsed by dpkg-
buildpackage
4. Test package functionality on MIPS systems to ensure no WebEngine
features are expected

fix: 在 MIPS 架构上排除 qt6-webengine-dev

在 mipsel 和 mips64el 架构上从 Build-Depends 中排除 qt6-webengine-dev，
因为 Qt WebEngine 不支持这些 MIPS 架构。这可以防止在 MIPS 系统上构建时出
现构建失败。

Influence:
1. 在 MIPS 系统上测试构建，验证包能成功构建
2. 验证其他架构的构建仍然包含 qt6-webengine-dev
3. 检查排除语法是否被 dpkg-buildpackage 正确解析
4. 在 MIPS 系统上测试包功能，确保不期望有 WebEngine 功能

Author: Kakueeen

debian/control

@@ -9,7 +9,7 @@ Build-Depends:
  qt6-base-dev,
  qt6-tools-dev-tools,
  qt6-tools-dev,
- qt6-webengine-dev,
+ qt6-webengine-dev [!mipsel !mips64el],
  libdtk6widget-dev,
  libdtk6gui-dev,
  libdtk6core-dev,