fix: loongarch64 disable compile unit test binaries

[mhduiy]

loongarch64 do not compile unit-test

Log: loongarch64 disable compile unit test binaries

[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 在CMakeLists.txt文件中，对BUILD_TESTS的判断条件进行了修改，增加了对CMAKE_SYSTEM_PROCESSOR的检查。这可能是为了确保在特定硬件平台上不编译测试代码。

是否建议立即修改:

• 否，这个提交没有明显的语法错误或逻辑问题。但是，如果有更多的上下文，比如styles和styleplugins目录的编译依赖，可能需要进一步审查以确保这些更改不会引入新的问题。

建议:

• 确保添加了对CMAKE_SYSTEM_PROCESSOR的检查是有意义的，并且与项目的构建流程和测试策略相匹配。
• 如果BUILD_TESTS条件的修改是为了适应特定的硬件平台，建议添加注释说明为什么需要这样做，以便其他开发者理解这一变更的原因。
• 考虑将if(BUILD_TESTS AND NOT ${CMAKE_SYSTEM_PROCESSOR} MATCHES "loongarch")条件分解为更小的、易于理解的条件，以提高代码的可读性。

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: 18202781743, mhduiy

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[deepin-bot]

TAG Bot

New tag: 5.6.34
DISTRIBUTION: unstable
Suggest: synchronizing this PR through rebase #239