style: 题目新增/编辑对话框将'公开'字段放到下一行独立显示

src/view/admin/ProblemManageView.vue

@@ -546,12 +546,10 @@ onMounted(() => {
               </el-select>
             </el-form-item>
           </el-col>
-          <el-col :span="6">
-            <el-form-item label="公开" prop="isPublic">
-              <el-switch v-model="problemForm.isPublic" :active-value="1" :inactive-value="0" active-text="公开" inactive-text="未公开" />
-            </el-form-item>
-          </el-col>
         </el-row>
+        <el-form-item label="公开" prop="isPublic">
+          <el-switch v-model="problemForm.isPublic" :active-value="1" :inactive-value="0" active-text="公开" inactive-text="未公开" />
+        </el-form-item>
         <el-form-item label="分类">
           <el-checkbox-group v-model="problemForm.categoryIds">
             <el-checkbox v-for="item in categoryOptions" :key="item.id" :value="item.id" :label="item.id">