fix: 调整滑动条横条和刻度颜色

[Whale107]

调整滑动条横条和刻度颜色

Log: 调整滑动条横条和刻度颜色 Bug: https://pms.uniontech.com/bug-view-254295.html Influence: 调整滑动条横条和刻度颜色

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deepin pr auto review

关键摘要:

• 在新增的#include <DGuiApplicationHelper>中，需要确认是否有必要包含这个头文件，因为原始代码中没有使用DGuiApplicationHelper的任何方法。
• 修改了penLine的创建方式，使用了DGuiApplicationHelper::adjustColor方法来调整颜色。需要验证这个颜色调整是否符合设计规范，以及是否对用户界面有影响。

是否建议立即修改:

• 是，应该立即确认新增的头文件是否真的必要，并验证颜色调整是否符合预期效果。如果这些修改是无意的或者会引入问题，应该立即回退。

[deepin-bot[bot]]

Doc Check bot :green_circle: Document Coverage Check Passed!

[deepin-bot[bot]]

TAG Bot

New tag: 5.7.1 DISTRIBUTION: unstable Suggest: synchronizing this PR through rebase #605