fix: 修复isSys=0不判断角色的问题

src/main/java/com/uas/platform/b2b/model/User.java

@@ -353,7 +353,7 @@ public class User implements Serializable {
 	}
 
 	public boolean isSys() {
-		if (Constant.YES != issys) {
+		if (issys == null || Constant.YES != issys) {
 			setCurrentEnterpriseRoles();
 			Set<Role> roles = getRoles();
 			if (!CollectionUtils.isEmpty(roles)) {