refactor: 统一重构底部导航栏间距逻辑与显示规则

1.  新增全局计算属性统一处理底部导航栏显示判断与间距样式
2.  替换多个页面的手写底部间距逻辑为通用样式
3.  新增路由匹配工具函数，支持灵活配置导航栏显示范围
4.  优化底部导航组件的显示条件判断

pages_promotion/fenxiao/order.vue

@@ -7,7 +7,7 @@
 				</view>
 			</block>
 		</view>
-		<mescroll-uni ref="mescroll" @getData="getData" top="90" class="member-point" :size="8" v-if="storeToken" :style="fenxiaoOrderPageStyle">
+		<mescroll-uni ref="mescroll" @getData="getData" top="90" class="member-point" :size="8" v-if="storeToken" :style="tabBarPagePaddingStyle">
 			<view class="goods_list" slot="list">
 				<view class="order-list">
 					<view class="order-item" v-for="(orderItem, orderIndex) in orderList" :key="orderIndex"
@@ -134,13 +134,6 @@ export default {
 			subMemberId: ''
 		};
 	},
-	computed: {
-		fenxiaoOrderPageStyle() {
-			return this.$util.objToStyle({
-				paddingBottom: this.tabBarList && this.tabBarList.list ? '112rpx' : '0'
-			});
-		}
-	},
 	mixins: [fenxiaoWords],
 	onLoad(option) {
 		if (option.type != undefined) this.selectId = option.type;