fix: ensure ttsModelChange executes after DOM updates using nextTick

--bug=1058556 --user=刘瑞斌 【应用】基本信息节点开启语音播放，调试模式下切换模型，点击保存提问后使用语音播放失败 https://www.tapd.cn/62980211/s/1729683

ui/src/workflow/nodes/base-node/index.vue

@@ -170,7 +170,7 @@
 import { groupBy, set } from 'lodash'
 import NodeContainer from '@/workflow/common/NodeContainer.vue'
 import type { FormInstance } from 'element-plus'
-import { ref, computed, onMounted } from 'vue'
+import { ref, computed, onMounted, nextTick } from 'vue'
 import { MsgError, MsgSuccess, MsgWarning } from '@/utils/message'
 import { t } from '@/locales'
 import TTSModeParamSettingDialog from '@/views/application/component/TTSModeParamSettingDialog.vue'
@@ -265,11 +265,13 @@ function getTTSModel() {
 }
 
 function ttsModelChange() {
+  nextTick(() => {
     if (form_data.value.tts_model_id) {
       TTSModeParamSettingDialogRef.value?.reset_default(form_data.value.tts_model_id, id)
     } else {
       refreshTTSForm({})
     }
+  })
 }
 
 function ttsModelEnableChange() {