fix(@gms/gms-plugin-billexpand): 基础数据组件问题

- 点击列表条目后列表可能不消失

- 弹窗选择后点击input后内容消失

develop/@gms/gms-plugin-billexpand/src/control/baseDataSelect/index.vue

@@ -15,7 +15,7 @@
           v-for="(item,index) in baseDataList" 
           :key="item.code" 
           :value="item.code" 
-          @click="handleMainSearchSelectClick(item)"
+          @mousedown="handleMainSearchSelectClick(item)"
         >
           <span class="acct-search-label">{{ getLable(item) }}</span>
         </li>
@@ -468,9 +468,15 @@ export default {
       this.$emit('data-change', this.value)
     },
     onSelectOk(value) {
+      if (this.multiple) {
         this.selection = value
         let result = this.getReturnInfo()
         this.sendEvent(result)
+      }
+      else if (value && value.length) {
+        this.handleMainSearchSelectClick(value[0])
+      }
+      
     },
   },
 }