fix: 解决wayland下，DDialog窗口透明问题的问题

[cjqkl]

wayland下，当进程设置DGuiApplicationHelper::ColorCompositing后，DDialog需要 主动设置模糊窗口效果

Log:
Bug: https://pms.uniontech.com/bug-view-249975.html Influence: wayland下，DDialog窗口模糊

[deepin-ci-robot]

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This pull-request has been approved by: cjqkl

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[deepin-ci-robot]

Hi @cjqkl. Thanks for your PR.

I'm waiting for a linuxdeepin member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[kegechen]

这个提交cherry-pick到master分支一份，

后续提交先提到master，然后合并了cherry-pick过来，放置分支差异过大