feat(clipping): implement hide/recover toggle for all section dialogs

Update all three section dialogs to support hide/show toggle:

SectionAxisDialogManager:
- onHideToggle now calls hideSection()/recoverSection()

SectionBoxDialogManager:
- onHideToggle now calls hideSection()/recoverSection()

SectionPlanePanel:
- Add isHidden state tracking
- Change onHide to onHideToggle(isHidden)
- Add setHiddenState/getHiddenState methods
- Update button to toggle active state

SectionPlaneDialogManager:
- Switch to onHideToggle callback
- Call hideSection()/recoverSection() based on toggle state

Behavior: Click hide button to hide section, click again to recover.

src/managers/section-axis-dialog-manager.ts

@@ -57,8 +57,12 @@ export class SectionAxisDialogManager extends BaseDialogManager {
             defaultAxis: 'x',
             defaultHidden: false,
             onHideToggle: (isHidden) => {
-                // 隐藏功能：第三方引擎无 API，仅输出日志
-                console.log('[SectionAxisDialogManager] 隐藏切换（暂不支持）：', isHidden);
+                console.log('[SectionAxisDialogManager] 隐藏切换：', isHidden);
+                if (isHidden) {
+                    this.registry.engine3d?.hideSection();
+                } else {
+                    this.registry.engine3d?.recoverSection();
+                }
             },
             onReverse: () => {
                 // 反向功能：第三方引擎无 API，仅输出日志