feat: add submit event handler to ModelSelect in BaseForm.vue

--bug=1064513 --user=刘瑞斌 【知识库】在创建知识库界面新建向量模型，新建的向量模型没有及时显示在向量模型列表中 https://www.tapd.cn/62980211/s/1812076

Author: liuruibin

ui/src/views/knowledge/component/BaseForm.vue

@@ -35,6 +35,7 @@
         v-model="form.embedding_model_id"
         :placeholder="$t('views.knowledge.form.EmbeddingModel.placeholder')"
         :options="modelOptions"
+        @submit-model="getSelectModel"
         :model-type="'EMBEDDING'"
         showFooter
       ></ModelSelect>