fix(accounting): add padding/borderRadius to download button, remove HBox height constraint

wwwroot/billing.ui

@@ -44,7 +44,6 @@
 			"id": "billing_stats_box",
 			"options": {
 				"width": "100%",
-				"height": "40px",
 				"gap": "20px",
 				"align_items": "center"
 			},
@@ -63,7 +62,10 @@
 					"options": {
 						"label": "下载Excel",
 						"bgcolor": "#52c41a",
-						"color": "#FFFFFF"
+						"color": "#FFFFFF",
+						"borderRadius": "4px",
+						"padding": "4px 12px",
+						"cwidth": 10
 					},
 					"binds": [
 						{