fix: 修复可空枚举类型字段没有匹配到枚举选择器的问题

Admin.NET/Admin.NET.Core/Service/CodeGen/SysCodeGenConfigService.cs

@@ -133,7 +133,7 @@ public class SysCodeGenConfigService : IDynamicApiController, ITransient
             if (!string.IsNullOrWhiteSpace(tableColumn.DictTypeCode))
             {
                 codeGenConfig.DictTypeCode = tableColumn.DictTypeCode;
-                codeGenConfig.EffectType = tableColumn.DictTypeCode.EndsWith("Enum") ? "EnumSelector" : "Select";
+                codeGenConfig.EffectType = tableColumn.DictTypeCode.TrimEnd('?').EndsWith("Enum") ? "EnumSelector" : "Select";
             }
 
             orderNo += 10; // 每个配置排序间隔10