Clarity on LDAP documentation

### Is your feature request related to a problem? Please describe. The [LDAP documentation](https://www.rabbitmq.com/docs/ldap#prerequisites) states that the user needs to install a separate package for erlang-eldap. However, the rabbitmq-server [installation guide](https://www.rabbitmq.com/docs/install-rpm#install-zero-dependency-rpm) hints to the user to use the "Zero-dependency erlang" that the project maintains. By using this, erlang-eldap is [already provided](https://github.com/rabbitmq/erlang-rpm?tab=readme-ov-file#available-erlang-applications) - if someone used this erlang during `rabbitmq-server` install, they will have package conflicts while trying to install an `erlang-eldap` from another source. ### Describe the solution you'd like The [LDAP documentation](https://www.rabbitmq.com/docs/ldap#prerequisites) should state that by using the rabbitmq maintained erlang, you wouldn't need to install anything additional ### Describe alternatives you've considered _No response_ ### Additional context _No response_