fix 注册设备默认信息

Src/Dlhis.Basic/Device/Services/Implements/DeviceConnectService.cs

@@ -135,11 +135,13 @@ public class DeviceConnectService : IDeviceConnectService
         {
             if (device == null)
             {
+                var templateCode = await _dbContext.Queryable<DeviceTemplateEntity>().Where(x => x.Name == "其他").Select(x => x.Code).FirstAsync();
+
                 device = new DeviceEntity
                 {
                     Code = Guid.NewGuid(),
-                    ConnectionInfo = string.Empty,
-                    TemplateCode = null,
+                    ConnectionInfo = "{}",
+                    TemplateCode = templateCode,
                     UniqueNo = uniqueNo,
                     TenantId = tenantId,
                     Supplier = string.Empty,