fix(ops): 移除饼图 hover 时的 emphasis label 横线标签

保留 tooltip 悬浮卡片，仅去掉 hover 饼块时弹出的文字标签。

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/web-antd/src/views/ops/cleaning/work-order/dashboard/index.vue

@@ -459,14 +459,7 @@ function getStatusDistributionChartOptions(): ECOption {
         emphasis: {
           scale: true,
           scaleSize: 8,
-          label: {
-            show: true,
-            fontSize: 14,
-            fontWeight: '600',
-            color: '#262626',
-            formatter: '{b}\n{c}个',
-            lineHeight: 20,
-          },
+          label: { show: false },
         },
         itemStyle: {
           borderColor: '#fff',