chore: Empty voice support

kicc-platform/kicc-platform-biz/kicc-system-biz/src/main/java/com/cloud/kicc/system/service/impl/ImContentServiceImpl.java

@@ -102,9 +102,6 @@ public class ImContentServiceImpl extends ServiceImpl<ImContentMapper, ImContent
             if (voiceFile.delete()) {
                 System.out.println("已成功删除临时文件!");
             }
-            if (StrUtil.isBlank(transcriptionResult.getText())) {
-                throw new CheckedException("Ai语音转文字为空解析失败!");
-            }
 
             imContent.setContent(transcriptionResult.getText());
             ImContent content = askChatCompletion(imContent);