修改视距，增加限制，视距设置不得为0

src/views/military/modules/earthMap/scene/model/sceneInfo/SenceInfo.vue

@@ -14,7 +14,7 @@
       </a-col>
       <a-col :span="11" :offset="1">
         <div>站点视距:</div>
-        <a-input-number class="inputWidthCss1" v-model:value="subObject.viewDistance" :disabled="disable"></a-input-number>
+        <a-input-number  class="inputWidthCss1" v-model:value="subObject.viewDistance" :disabled="disable" :min="0.5" :step="0.0001"></a-input-number>
       </a-col>
       <a-col :span="11" :offset="1">
         <div>站点类型:</div>