修复选择框bug

src/components/ai/image/ImageToImage.vue

@@ -92,7 +92,9 @@
           <el-select 
             v-model="selectedStyle" 
             placeholder="选择风格"
-              filterable
+            filterable
+            allow-create
+            default-first-option
             @change="handleStyleSelectChange"
             size="small"
             class="custom-style-select"