Include empty components in translatable arguments

[Electroid]

Consider the following scenario:

MessageFormat format = new MessageFormat("{1} was killed by {2}"); // key = player.death

Component message = translatable()
  .key("player.death")
  .args(empty(), text("Bob"), text("Alice"))
  .build()

If you translate message today, you'll get "Alice was killed by {2}". This is because AbstractComponent#asComponents filters out Component#empty. While this works in most situations, it causes index-skew with TranslatableComponent.

[Electroid]

Also worth noting, this is a regression from 3.x