fix: 调整MuyangDog的子弹检测范围并修复UIState字段显示问题

修复MuyangDog角色子弹检测范围从400减少到300以平衡游戏难度
在UIState中添加字段动画播放状态检查，防止动画冲突

scripts/Contents/Characters/MuyangDog.gd

@@ -6,7 +6,7 @@ func ai():
 	super.ai()
 	if parryCounter.isCooldowned():
 		var track = getTrackingAnchor()
-		var bullet = BulletTool.findClosetBulletCanDamage(track, get_tree(), self , 400)
+		var bullet = BulletTool.findClosetBulletCanDamage(track, get_tree(), self , 300)
 		if is_instance_valid(bullet):
 			BulletBase.generate(ComponentManager.getBullet("Parrier"), self , track, track.angle_to_point(bullet.position))
 			parryCounter.start()

scripts/Statemachine/UIState.gd

@@ -43,6 +43,7 @@ func _physics_process(_delta):
 		bossbar.visible = true
 		itemsContainer.visible = true
 		energyContainer.visible = true
+		if !fieldsAnimator.is_playing():
 			if Input.is_action_just_pressed("showFields"):
 				for i in fields.get_children():
 					fields.remove_child(i)