Core/Spells: Exclude TriggerCastFlags that can be set for non-triggered spells from being checked by Spell::IsTriggered

Port From (https://github.com/TrinityCore/TrinityCore/commit/56fb627c7dd151190412468370db083ef3b044ad)

Source/Framework/Constants/Spells/SpellConst.cs

@@ -1597,6 +1597,7 @@ namespace Framework.Constants
         DontResetPeriodicTimer = 0x20000,   //! Will allow periodic aura timers to keep ticking (instead of resetting)
         DontReportCastError = 0x40000,   //! Will Return SpellFailedDontReport In Checkcast Functions
         FullMask = 0x0007FFFF, //! Used when doing CastSpell with triggered == true
+        IsTriggeredMask = FullMask & ~(IgnorePowerCost | IgnoreCastInProgress | IgnoreCastTime | IgnoreShapeshift | DontReportCastError), //!< Will be recognized by Spell::IsTriggered as triggered
 
         // debug flags (used with .cast triggered commands)
         IgnoreEquippedItemRequirement = 0x80000, //! Will ignore equipped item requirements
@@ -1639,7 +1640,7 @@ namespace Framework.Constants
         Unk8 = 0x80,
         Unk9 = 0x100,
         Unk10 = 0x200,
-        Unk11 = 0x400,
+        Unk11 = 0x400,           // sorts missed targets before hit targets for chain visual
         PowerLeftSelf = 0x800,
         Unk13 = 0x1000,
         Unk14 = 0x2000,

Source/Game/Spells/Spell.cs

@@ -8476,7 +8476,7 @@ namespace Game.Spells
             m_timer = m_casttime > 0 ? m_casttime : 0;
         }
 
-        public bool IsTriggered() { return (!m_fromClient && _triggeredCastFlags.HasAnyFlag(TriggerCastFlags.FullMask)) || !m_originalCastId.IsEmpty(); }
+        public bool IsTriggered() { return (!m_fromClient && _triggeredCastFlags.HasAnyFlag(TriggerCastFlags.IsTriggeredMask)) || !m_originalCastId.IsEmpty(); }
         public bool IsTriggeredByAura(SpellInfo auraSpellInfo) { return (auraSpellInfo == m_triggeredByAuraSpell); }
         public bool IsIgnoringCooldowns() { return _triggeredCastFlags.HasAnyFlag(TriggerCastFlags.IgnoreSpellAndCategoryCD); }
         public bool IsFocusDisabled() { return _triggeredCastFlags.HasFlag(TriggerCastFlags.IgnoreSetFacing) || (m_spellInfo.IsChanneled() && !m_spellInfo.HasAttribute(SpellAttr1.TrackTargetInChannel)); }