Fixed event movement checks ignoring ledges if they're not on the top layer, fixed Sketch not working, fixed a couple of other minor bugs, Rubocop-suggested tweaks

Data/Scripts/011_Battle/002_Move/005_Move_Effects_000-07F.rb

@@ -1752,7 +1752,7 @@ class PokeBattle_Move_05D < PokeBattle_Move
     if !lastMoveData ||
        user.pbHasMove?(target.lastRegularMoveUsed) ||
        @moveBlacklist.include?(lastMoveData.function_code) ||
-       lastMoveData.type = :SHADOW
+       lastMoveData.type == :SHADOW
       @battle.pbDisplay(_INTL("But it failed!"))
       return true
     end

Data/Scripts/011_Battle/003_Battle/005_Battle_Action_AttacksPriority.rb

@@ -88,7 +88,6 @@ class PokeBattle_Battle
 
   def pbChoseMoveFunctionCode?(idxBattler,code)
     return false if @battlers[idxBattler].fainted?
-    idxMove = @choices[idxBattler][1]
     if @choices[idxBattler][0]==:UseMove && @choices[idxBattler][1]
       return @choices[idxBattler][2].function == code
     end