fix: added blurMultiplier adjustment

[xionglinlin]

The blur effect can be adjusted by blurMultiplier

Issue: https://github.com/linuxdeepin/developer-center/issues/9374

[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 在FloatingPanel.qml中新增的blurMultiplier属性在InWindowBlur组件中没有使用，可能是不必要的添加。
• InWindowBlur组件中的multiplier属性被标记为readonly，但在FloatingPanel.qml中没有看到相应的修改，这可能意味着multiplier属性不应该被设置。
• radius属性的默认值在InWindowBlur组件中被设置为blur.blurMax，但在FloatingPanel.qml中没有看到对radius属性的修改，这可能意味着radius属性不应该被设置。

是否建议立即修改:

• 是，应该确认blurMultiplier属性的必要性，并确保radius属性的默认值不会被修改。如果radius属性的默认值不应该被修改，那么应该从InWindowBlur组件中移除radius属性的默认值设置。

[xionglinlin]

/review @18202781743

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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

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Needs approval from an approver in each of these files: - **[debian/deepin/OWNERS](https://github.com/linuxdeepin/dtkdeclarative/blob/master/debian/deepin/OWNERS)** Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[hudeng-go]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: 18202781743, xionglinlin, zccrs

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files: - **[debian/deepin/OWNERS](https://github.com/linuxdeepin/dtkdeclarative/blob/master/debian/deepin/OWNERS)** Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[xionglinlin]

/forcemerge

[deepin-bot[bot]]

This pr force merged! (status: unstable)