Core/Spells: add Target Processing (SMSG_SPELLLOGEXECUTE) to LAUNCH_TARGET phase.

Move EffectInterruptCast to LAUNCH_TARGET Phase.

Closes #3718
Closes #6042

src/server/game/Spells/Spell.cpp

@@ -6880,9 +6880,11 @@ void Spell::HandleLaunchPhase()
     for (Unit::AuraEffectList::const_iterator j = Auras.begin(); j != Auras.end(); ++j)
     {
         if ((*j)->IsAffectedOnSpell(m_spellInfo))
-            usesAmmo=false;
+            usesAmmo = false;
     }
 
+    PrepareTargetProcessing();
+
     for (std::list<TargetInfo>::iterator ihit= m_UniqueTargetInfo.begin(); ihit != m_UniqueTargetInfo.end(); ++ihit)
     {
         TargetInfo& target = *ihit;
@@ -6916,8 +6918,11 @@ void Spell::HandleLaunchPhase()
                     break;
             }
         }
+
         DoAllEffectOnLaunchTarget(target, multiplier);
     }
+
+    FinishTargetProcessing();
 }
 
 void Spell::DoAllEffectOnLaunchTarget(TargetInfo& targetInfo, float* multiplier)

src/server/game/Spells/SpellEffects.cpp

@@ -3455,7 +3455,7 @@ void Spell::EffectHealMaxHealth(SpellEffIndex /*effIndex*/)
 
 void Spell::EffectInterruptCast(SpellEffIndex effIndex)
 {
-    if (effectHandleMode != SPELL_EFFECT_HANDLE_HIT_TARGET)
+    if (effectHandleMode != SPELL_EFFECT_HANDLE_LAUNCH_TARGET)
         return;
 
     if (!unitTarget || !unitTarget->IsAlive())