This is standard Mendix functionality, which is part of the standard login action, so you will not find it in the modeler. There is no setting to influence this behavior.
You could override this by creating a BeforeCommit event handler on Account, or any other entity which inherits from System.User, and set FailedLogins to 0 (or create your own logic, as setting this value to 0 reduces the security of your application).