feat(WeaponCard): 添加升华按钮动画效果

- 为升华按钮添加开合动画效果
- 更新TextSwitchButton以支持动态文本切换
- 在Weapon.gd中添加动画播放逻辑

scripts/Statemachine/TextSwitchButton.gd

@@ -6,8 +6,9 @@ class_name TextSwitchButton
 @export var unpressedText: String = "未按下"
 
 func _ready():
-	updateText()
-	toggled.connect(updateText)
+	updateText(button_pressed)
+	toggle_mode = true
+	toggled.connect(func(on: bool): updateText(on))
 
-func updateText():
-	text = [unpressedText, pressedText][int(button_pressed)]
+func updateText(on: bool):
+	text = [unpressedText, pressedText][int(on)]