修复语音致辞

@@ -212,9 +212,12 @@ class _VoiceWelcomeSettingPageState extends State<VoiceWelcomeSettingPage> {
         if (voiceInco != null && voiceInco.isNotEmpty) {
           defaultVoiceText = voiceInco;
         }
-        //模板reserve字段为null时：被请人语音播报与预订人不一致默认选中、特殊用餐类型复选框默认开启；
-        //reserve字段有值时：被请人语音播报与预订人一致默认选中、特殊用餐类型复选框默认关闭
-        if (model.reserve == null) {
+        //reserve为null，或reserve有值但voiceInco为null/空时：默认选中“不一致”、特殊用餐类型复选框默认开启；
+        //reserve有值且voiceInco有内容时：默认选中“一致”、特殊用餐类型复选框默认关闭
+        String? reserveVoiceInco = model.reserve?.voiceInco;
+        bool reserveVoiceIsEmpty =
+            reserveVoiceInco == null || reserveVoiceInco.trim().isEmpty;
+        if (model.reserve == null || reserveVoiceIsEmpty) {
           guestVoiceSame = false;
           specialVoiceEnabled = true;
         } else {