[Suggestion] Update Combat Experience with riding dragon

[Kerbinator-Fras]

#58 together with this, even a skeleton can be fatal to the player-dragon. Because player's arrow got obstructed, and when riding dragon your hand pos is way too high.
So, if the dragon head have damage like wild dragon (Value can be smaller, deal damage plus knockback, and work at height of 1-4m all) it is going to be much better anyway.
And it will be better to further slim the dragon hitboxes (more complexity) and make arrow shooting experience better.
(Needless to say, dragon for me now is only an aeroplane to get faster on map exploration because dragon speed is much faster than creative flying and is much more awesome)