Feat activated surface auto transition

[ZhongYic00]

• when current activated is minimize / closed
• when active workspace is changed
• https://github.com/linuxdeepin/treeland/pull/180 is merged to this

  Reduce use of forceActiveFocus, use focusscope etc. to automatically pass focus along the item tree. Currently uses of forceActiveFocus lacks checking, may result in:

  • passwordinput failed to get focus, but unset workspace's focus so focus is set to root content item
  • greeter shows but later some surface becomes mapped so focus is robbed

  Also fix that focus get lost when only there's one surface after switcher or some treeland controls get focus

  based on vioken/waylib#285

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: justforlxz, ZhongYic00

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[deepin-ci-robot]

deepin pr auto review

Summary:

• 代码中使用了forceActiveFocus来设置焦点，这可能不是最佳实践，因为焦点应该由用户或脚本控制。
• 在onActiveFocusChanged中，直接调用了Helper.activatedSurface = surface，这可能会导致不必要的更新，应该检查surface是否确实发生了变化。
• selectSurfaceToActivate函数中，使用了findIf来查找未最小化的窗口，但是没有检查surfacesModel是否为空，可能会导致IndexOutOfRange错误。
• WindowDecoration.qml中的requestToggleMaximize信号已被重命名为requestMaximize，但是相关的代码可能还没有更新，需要检查是否所有相关调用都已经更新。
• LayerSurface.qml中的focus属性被设置为true，这可能会导致非预期的行为，因为焦点应该是由用户或脚本控制。