fix(战斗): 调整技能攻击参数和冰冻逻辑

- 提高部分技能攻击的Y轴偏移量，优化命中判定
- 将冰冻基础时间从1秒调整为3秒，增强控制效果
- 修复冰冻时间叠加逻辑，改为取最大值避免重复叠加
- 修复冰冻触发条件，避免对已冰冻目标重复触发
- 调整英雄进度条总长度，优化UI显示

assets/resources/game/heros/top.prefab

@@ -1239,7 +1239,7 @@
       "__id__": 36
     },
     "_mode": 0,
-    "_totalLength": 70,
+    "_totalLength": 50,
     "_progress": 1,
     "_reverse": false,
     "_id": ""
@@ -1769,7 +1769,7 @@
       "__id__": 60
     },
     "_mode": 0,
-    "_totalLength": 70,
+    "_totalLength": 50,
     "_progress": 1,
     "_reverse": false,
     "_id": ""

assets/resources/game/skill/atk/arrow.prefab

@@ -281,7 +281,7 @@
       "__id__": 13
     },
     "atk_x": 10,
-    "atk_y": 15,
+    "atk_y": 25,
     "debugMode": false,
     "_id": ""
   },

assets/resources/game/skill/atk/arrow_blue.prefab

@@ -281,7 +281,7 @@
       "__id__": 13
     },
     "atk_x": 10,
-    "atk_y": 15,
+    "atk_y": 25,
     "debugMode": false,
     "_id": ""
   },

assets/resources/game/skill/atk/arrow_red.prefab

@@ -281,7 +281,7 @@
       "__id__": 13
     },
     "atk_x": 10,
-    "atk_y": 15,
+    "atk_y": 25,
     "debugMode": true,
     "_id": ""
   },

assets/resources/game/skill/atk/ball_blue.prefab

@@ -281,7 +281,7 @@
       "__id__": 13
     },
     "atk_x": 10,
-    "atk_y": 15,
+    "atk_y": 20,
     "debugMode": true,
     "_id": ""
   },

assets/resources/game/skill/atk/ball_red.prefab

@@ -281,7 +281,7 @@
       "__id__": 13
     },
     "atk_x": 10,
-    "atk_y": 15,
+    "atk_y": 25,
     "debugMode": true,
     "_id": ""
   },

assets/resources/game/skill/atk/ball_zi.prefab

@@ -281,7 +281,7 @@
       "__id__": 13
     },
     "atk_x": 10,
-    "atk_y": 15,
+    "atk_y": 20,
     "debugMode": true,
     "_id": ""
   },