fix: the display size of dci icon is exceptional

[FeiWang1119]

The size of dci icon becomes larger than before when updating the interface under the dpi > 1.0

Log:

[deepin-bot[bot]]

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This pull-request has been approved by: FeiWang1119, kegechen

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Needs approval from an approver in each of these files: - **[debian/deepin/OWNERS](https://github.com/linuxdeepin/dtkdeclarative/blob/dev/animation/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

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: FeiWang1119, kegechen

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/dev/animation/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

[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 在D.DciIcon元素中新增了mode, theme, palette, sourceSize属性，需要确认这些属性的添加是否符合设计需求和组件的预期行为。
• rotation属性的值根据root.isExpanded的值动态变化，这可能是一个功能性的改变，但需要确保这个逻辑的正确性和可维护性。
• Layout.preferredWidth和Layout.preferredHeight属性被移除，如果这些大小是根据其他因素动态计算的，这可能会影响布局的预期行为。

是否建议立即修改:

• 是，需要确保新增属性的添加是有意义的，并且不会对现有功能产生负面影响。
• 是，需要验证rotation属性的逻辑是否正确，并且是否有必要进行这样的动态变化。
• 是，如果移除Layout.preferredWidth和Layout.preferredHeight会影响布局的预期行为，那么应该立即修复或提供替代方案。