fix(缺陷管理): 缺陷详情关联用例展示下拉菜单问题

--bug=1036499 --user=宋昌昌 【缺陷管理】缺陷详情-用例-点击关联用例-显示下拉选项 https://www.tapd.cn/55049933/s/1468300

frontend/src/views/bug-management/components/bugCaseTab.vue

@@ -1,14 +1,7 @@
 <template>
   <div>
     <div class="flex items-center justify-between">
-      <a-dropdown @select="handleSelect">
-        <a-button type="primary"> {{ t('caseManagement.featureCase.linkCase') }} </a-button>
-        <template #content>
-          <a-doption v-for="item of caseTypeOptions" :key="item.value" :value="item.value">{{
-            t(item.label)
-          }}</a-doption>
-        </template>
-      </a-dropdown>
+      <a-button type="primary" @click="handleSelect">{{ t('caseManagement.featureCase.linkCase') }}</a-button>
       <a-input-search
         v-model:model-value="keyword"
         :placeholder="t('caseManagement.featureCase.searchByNameAndId')"
@@ -29,16 +22,9 @@
       <template v-if="(keyword || '').trim() === ''" #empty>
         <div class="flex w-full items-center justify-center">
           {{ t('caseManagement.caseReview.tableNoData') }}
-          <a-dropdown @select="handleSelect">
-            <MsButton class="ml-[8px]">
+          <MsButton class="ml-[8px]" @click="handleSelect">
             {{ t('caseManagement.featureCase.linkCase') }}
           </MsButton>
-            <template #content>
-              <a-doption v-for="item of caseTypeOptions" :key="item.value" :value="item.value">{{
-                t(item.label)
-              }}</a-doption>
-            </template>
-          </a-dropdown>
         </div>
       </template>
     </ms-base-table>
@@ -193,7 +179,6 @@
   const getTableParams = ref<TableQueryParams>({});
 
   function handleSelect(value: string | number | Record<string, any> | undefined) {
-    currentSelectCase.value = value as string;
     innerVisible.value = true;
   }