(Fix) Fortify hardcoding middleware aliases

[Roardom]

Fortify hard codes middleware aliases, so we have no choice but to define them in our app. With the exception of auth middleware, which fortify allows us to define ourselves.

[what-the-diff]

PR Summary

• Middleware Inclusion
  Inclusion of RedirectIfAuthenticated middleware to enhance user authentication security.
• Middleware Alias Creation
  Introduction of recognizable middleware shortcuts for 'guest' and 'throttle' in Kernel.php.
• Authentication Configuration Update
  Addition of auth_middleware in configuration for specifying the Authenticate middleware, providing higher customization for authentication.