Added evolution method for Galarian Yamask, minor refactoring in battle code, a Pokémon's ability no longer needs resetting when changing its ability_index

Data/Scripts/011_Battle/001_Battler/001_PokeBattle_Battler.rb

@@ -706,6 +706,10 @@ class PokeBattle_Battler
     return @battle.pbOwnedByPlayer?(@index)
   end
 
+  def wild?
+    return @battle.wildBattle? && opposes?
+  end
+
   # Returns 0 if self is on the player's side, or 1 if self is on the opposing
   # side.
   def idxOwnSide

Data/Scripts/011_Battle/001_Battler/003_Battler_ChangeSelf.rb

@@ -86,6 +86,7 @@ class PokeBattle_Battler
     # Do other things
     @battle.pbClearChoice(@index)   # Reset choice
     pbOwnSide.effects[PBEffects::LastRoundFainted] = @battle.turnCount
+    $game_temp.party_direct_damage_taken[@pokemonIndex] = 0 if pbOwnedByPlayer?
     # Check other battlers' abilities that trigger upon a battler fainting
     pbAbilitiesOnFainting
     # Check for end of primordial weather

Data/Scripts/011_Battle/001_Battler/007_Battler_UseMove.rb

@@ -5,7 +5,7 @@ class PokeBattle_Battler
   def pbProcessTurn(choice,tryFlee=true)
     return false if fainted?
     # Wild roaming Pokémon always flee if possible
-    if tryFlee && @battle.wildBattle? && opposes? &&
+    if tryFlee && wild? &&
        @battle.rules["alwaysflee"] && @battle.pbCanRun?(@index)
       pbBeginTurn(choice)
       pbSEPlay("Battle flee")