fix shadowfiend scaling

[lime-green]

https://docs.google.com/spreadsheets/d/1ctQRsrlzE_AVyNA9nbrTOUbLwe28zYTk_T461_DJ3YM/edit#gid=0

Bunch of shadowfiend scaling fixes after investigation:

• Shadowfiend doesn't miss (no misses, dodges, parries)
• Shadowfiend base damage was too high
• Shadowfiend SP scaling was too high
• Shadowfiend strength scaling was incorrect
• Crit % in logs is much higher, around 9-12% but I didn't test this explicitly, so it's around 11% now

Also fix shadow priest presets

Shadowfiend stats were viewed in-game with the help of:
/run if not oldHasPetUI then oldHasPetUI = HasPetUI; HasPetUI = function() return true, false; end end PetTab_Update() ToggleCharacter("PetPaperDollFrame")