Hides the “Disable Other Login Mechanisms” if remote user option isn't checked

[snipe]

We recently had a user lock themselves out of their system with a 403 forbidden on the login page because they had enabled this checkbox without actually setting up remote login. This just makes it a little harder for this to happen by putting that environmental variable into a .env and checking that they actually have the remote login checkbox checked in the first place.

Edit: Actually I changed my mind here - For now we'll just check that the remote login option is at least checked.

[what-the-diff]

PR Summary

• Inclusion of Remote Login Option in Example Settings
  A new setting, SHOW_REMOTE_LOGIN_ONLY_OPTION, has been added to the example environment configuration file. This will guide users in setting up their environment.

• Incorporation of New Configuration in App Settings
  The newly introduced option show_remote_login_only_option has been added into the application configuration file. This allows the application to use this setting.

• Adaptation of Security View Earlier Settings
  The Security settings view has been updated to dynamically show or hide login options. This change is based on the login_remote_user_enabled setting and the newly introduced show_remote_login_only_option. It provides a more tailored login experience for users on the app's security page based on the chosen configuration.