fix: 调整熊角色攻击冷却时间和移除公鸡无敌状态

调整熊角色第3个攻击技能的冷却时间从5000毫秒增加到13000毫秒以平衡游戏性
移除世界场景中公鸡的无敌状态

components/Scenes/World.tscn

@@ -103,4 +103,3 @@ shape = SubResource("CircleShape2D_4hkht")
 polygon = PackedVector2Array(-2419, 1803, 2429, 1825, 2392, -366, 2867, -318, 2723, 2241, -2879, 2193, -2797, -2582, 2959, -2528, 2858, -347, 2420, -337, 2441, -1834, -2438, -1792)
 
 [node name="rooster" parent="." groups=["players"] instance=ExtResource("3_5ui6q")]
-currentInvinsible = true

scripts/Contents/Characters/Bear.gd

@@ -11,7 +11,7 @@ func register():
 	attackCooldownMap[0] = 3000
 	attackCooldownMap[1] = 10000
 	attackCooldownMap[2] = 8000
-	attackCooldownMap[3] = 5000
+	attackCooldownMap[3] = 13000
 	attackCooldownMap[4] = 4500
 	attackCooldownMap[5] = 5500
 	attackCooldownMap[6] = 10000