update: ai营销bug

src/views/ai/ai-data-report/conversion.vue

 <template>
   <div>
     <div class="search-bar">
-      <el-select class="contrast" placeholder="选择对比项" clearable v-if="comparative.options.length > 0" v-model="comparative.type" @change="getComparativeData">
+      <el-select class="contrast" placeholder="选择对比项" clearable v-if="comparative.options.length > 0" v-model="comparative.type" @change="onComparativeChange">
         <el-option v-for="el in comparative.options" :key="el.value" :value="el.value" :label="el.label"></el-option>
       </el-select>
       <div class="contrast-box" v-if="comparative.type">