fix(接口测试): 修复接口测试首页在被剧烈的网页缩放时出现数字显示不全的问题

--bug=1025825 --user=宋天阳 【首页】接口首页、测试跟踪首页，浏览器调窄后统计数字显示不全
https://www.tapd.cn/55049933/s/1366934

api-test/frontend/src/business/home/components/chart/CountChart.vue

@@ -11,7 +11,6 @@
 <script>
 import MsChart from 'metersphere-frontend/src/components/chart/MsChart';
 import { formatNumber } from '@/api/home';
-import { getUUID } from 'metersphere-frontend/src/utils';
 import { hasPermission } from 'metersphere-frontend/src/utils/permission';
 
 export default {
@@ -127,7 +126,7 @@ export default {
                 fontSize: 14,
                 color: '#646A73',
                 fontWeight: 400,
-                width: 50,
+                width: 40,
                 align: 'left',
                 lineHeight: 22,
               },