同步检查器组件面板展开状态

切换节点或组件时重置展开状态，避免复用旧节点的折叠状态。

apps/ai-game-creator-shell/src/view/ui-editor/components/Inspector/Components/ComponentPanel.tsx

@@ -1,5 +1,5 @@
 import { ChevronDown, ChevronRight, Plus, Trash2 } from 'lucide-react';
-import { useState } from 'react';
+import { useEffect, useState } from 'react';
 
 import type { Component } from '../../../../../features/ui-editor/types/Component';
 import type { UiEditorOperationResult } from '../../../../../features/ui-editor/useUiEditorState';
@@ -18,6 +18,10 @@ export function ComponentPanel(props: ComponentPanelProps) {
   const [expanded, setExpanded] = useState(Boolean(component));
   const [error, setError] = useState<string | null>(null);
 
+  useEffect(() => {
+    setExpanded(Boolean(component));
+  }, [component]);
+
   function setComponent(next: Component | null) {
     if (readOnly) return undefined;
     const result = onSetComponent(next);