feat(Core/SAI): SetData now has invoker (#19296)

* cherry-pick commit (cfc77fd843)

* cherry-pick commit (beb333738d)

* Move IsSmart function from headerfile

Co-authored-by: Treeston <14020072+Treeston@users.noreply.github.com>
Co-authored-by: Shauren <shauren.trinity@gmail.com>

src/server/game/AI/SmartScripts/SmartScriptMgr.cpp

@@ -346,6 +346,7 @@ void SmartAIMgr::LoadSmartAIFromDB()
         case SMART_EVENT_TRANSPORT_ADDCREATURE:
         case SMART_EVENT_NEAR_PLAYERS:
         case SMART_EVENT_SUMMONED_UNIT_EVADE:
+        case SMART_EVENT_DATA_SET:
             return true;
         default:
             return false;