fix: 修复按钮状态和饲料制作数量显示问题

- 在SelectIntialFeed和MakeFeed面板中添加按钮禁用逻辑，防止重复点击
- 将EntityBase中可制作饲料数量从2调整为5
- 修改MakeFeed面板中数量显示格式为字符串插值

scripts/Contents/Panels/SelectIntialFeed.gd

@@ -10,6 +10,7 @@ extends FullscreenPanelBase
 func _ready():
 	startBtn.pressed.connect(
 		func():
+			startBtn.disabled = true
 			UIState.closeCurrentPanel()
 			StarterPanel.selectingFeed = false
 	)