fix: 修复卡片背景激活状态和池色显示逻辑

1.  默认禁用卡片背景节点初始激活状态
2.  根据卡牌池等级动态显示对应颜色的背景高亮
3.  非当前类型的卡片背景隐藏所有子颜色节点

assets/resources/gui/element/cardbg.prefab

@@ -4352,7 +4352,7 @@
     "node": {
       "__id__": 1
     },
-    "_enabled": true,
+    "_enabled": false,
     "__prefab": {
       "__id__": 197
     },

assets/script/game/map/CardLiteComp.ts

@@ -223,9 +223,22 @@ export class CardLiteComp extends CCComp {
 
         const kindName = CKind[this.cardData.kind];
 
+        const poolColorNames = ["green", "blue", "purple", "yellow", "red"];
+        const poolColorIdx = Math.min(this.cardData.pool_lv, 5) - 1;
+        const activeColor = poolColorNames[poolColorIdx];
+
         if (this.BG_node) {
             this.BG_node.children.forEach(child => {
                 child.active = (child.name === kindName);
+                if (child.active) {
+                    child.children.forEach(colorChild => {
+                        colorChild.active = (colorChild.name === activeColor);
+                    });
+                } else {
+                    child.children.forEach(colorChild => {
+                        colorChild.active = false;
+                    });
+                }
             });
         }