修复风险：风险等级分布情况未填写显示

src/views/platform/risk/riskPeopleTable.vue

@@ -128,7 +128,7 @@ export default {
                 })
                 let result = ''
                 myMap.forEach((value, key) => {
-                    result += `${key}：${value || 0}；`
+                    result += `${(typeof key === 'undefined' || key === null || key === '') ? '未填写' : key}：${value || 0}；`
                 })
                 return result
             }