perf: optimize dock network plugin panel height resizing frequency

[yixinshark]

Introduced a QTimer to debounce the updateSize calls within the DockContentWidget. This heavily reduces the number of layout and geometry calculation events fired to the compositor (max 1 per 150ms) when rapidly scanning and appending Wi-Fi hotspots, thereby fixing visual flickering issues in Wayland without leaving dead space.

性能：优化任务栏网络插件面板高度调整频率

在 DockContentWidget 内部引入了 QTimer 对 updateSize 调用进行节流 （防抖）处理。扫描并连续追加 Wi-Fi 热点时，大幅减少发往合成器的
布局与几何计算事件（受限于最多 150ms 一次），从而修复了 Wayland 下
因窗口频繁变尺寸而引发的闪烁问题，同时也完整保留了正常的自适应包
裹尺寸机制。

Log: optimize dock network plugin panel height resizing frequency

Summary by Sourcery

Enhancements:

• Limit dock network panel height recalculation frequency via a timer-driven size update to avoid excessive geometry updates while preserving adaptive sizing behavior.

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: yixinshark

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[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Introduces a debounced height recalculation mechanism for the dock network plugin panel using a QTimer, reducing frequent resize/layout events while preserving correct adaptive sizing behavior, especially to fix Wayland flicker when Wi-Fi hotspots list changes rapidly.

Sequence diagram for debounced DockContentWidget height updates

sequenceDiagram
    participant NetView
    participant DockContentWidget
    participant QTimer

    NetView->>DockContentWidget: updateSize()
    alt widget not visible
        DockContentWidget->>DockContentWidget: doUpdateSize()
        DockContentWidget->>NetView: setMaxHeight(h)
    else widget visible
        DockContentWidget->>QTimer: start(150ms)
        QTimer-->>DockContentWidget: timeout()
        DockContentWidget->>DockContentWidget: doUpdateSize()
        DockContentWidget->>NetView: setMaxHeight(h)
    end

    DockContentWidget->>DockContentWidget: showEvent(event)
    DockContentWidget->>DockContentWidget: doUpdateSize()
    DockContentWidget->>DockContentWidget: queued doUpdateSize()
    DockContentWidget->>DockContentWidget: resize(size())

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Class diagram for DockContentWidget debounce changes

classDiagram
    class DockContentWidget {
        QVBoxLayout* m_mainLayout
        NetView* m_netView
        int m_minHeight
        JumpSettingButton* m_netSetBtn
        JumpSettingButton* m_netCheckBtn
        QTimer* m_updateTimer

        DockContentWidget(NetView* netView)
        void updateSize()
        void doUpdateSize()
        void showEvent(QShowEvent* event)
    }

    class NetView {
        void setMaxHeight(int h)
        int height()
        void updateSize()
    }

    class JumpSettingButton {
        int height()
        bool isVisible()
    }

    class QTimer {
        void setSingleShot(bool singleShot)
        void setInterval(int msec)
        void start()
        signal timeout()
    }

    class QVBoxLayout {
        QMargins contentsMargins()
    }

    class QMargins {
        int top()
    }

    DockContentWidget --> NetView : uses
    DockContentWidget --> JumpSettingButton : uses
    DockContentWidget --> QTimer : debounces_updateSize
    DockContentWidget --> QVBoxLayout : layout
    QVBoxLayout --> QMargins : returns

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File-Level Changes

Change	Details	Files
Debounce dock content size recalculation to limit resize/layout events to at most once every 150ms while maintaining correct sizing on show and when hidden.	Add a QTimer member to DockContentWidget, configure it as single-shot with a 150ms interval, and connect its timeout to a new doUpdateSize slot. Refactor the existing updateSize slot to either call doUpdateSize immediately when the widget is not visible or start the QTimer when it is visible, effectively debouncing resize operations. Move the original size computation and NetView max-height adjustment logic into doUpdateSize so it is shared by both the timer and direct callers. Adjust showEvent to invoke doUpdateSize synchronously and via a queued connection instead of the debounced updateSize, ensuring correct initial layout without delay. Extend the DockContentWidget member list to include the QTimer pointer for managing debounced updates.	dock-network-plugin/dockcontentwidget.h

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[sourcery-ai]

Hey - I've left some high level feedback:

• Consider replacing the hard-coded 150 ms debounce interval with a named constant or configuration value to make the intent clearer and simplify future tuning.
• If doUpdateSize is not meant to be called from outside this class, you could move it to the private section (or use a private slot) to avoid expanding the public API surface unnecessarily.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- Consider replacing the hard-coded `150` ms debounce interval with a named constant or configuration value to make the intent clearer and simplify future tuning.
- If `doUpdateSize` is not meant to be called from outside this class, you could move it to the private section (or use a private slot) to avoid expanding the public API surface unnecessarily.

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