[CLI] Console menu validation fixes

[Akkadius]

Related to work in #2857

Currently in database:dump when you run help, the root CLI menu --help takes over and shows the command menu instead of printing the help for the command itself.

Before

eqemu@332a3650bfe4:~/server$ ./bin/world database:dump --help

> EQEmulator [World] CLI Menu

character
  character:copy-character     Copies a character into a destination account
database
  database:dump                Dumps server database tables
  database:schema              Displays server database schema
  database:set-account-status  Sets account status by account name
  database:version             Shows database version
world
  world:version                Shows server version

After

eqemu@332a3650bfe4:~/server$ ./bin/world database:dump --help

Command

database:dump

Options

  --all
  --content-tables
  --login-tables
  --player-tables
  --bot-tables
  --merc-tables
  --state-tables
  --system-tables
  --query-serv-tables
  --table-structure-only
  --table-lock
  --dump-path=
  --dump-output-to-console
  --drop-table-syntax-only
  --compress