fix(Scripts/IcecrownCitadel): fix Lord Marrowgar MaxDistance bonestorm (azerothcore#25906)

Author: EricksOliveira

src/server/scripts/Northrend/IcecrownCitadel/boss_lord_marrowgar.cpp

@@ -217,16 +217,21 @@ struct boss_lord_marrowgar : public BossAI
                         break;
                     }
                     events.Repeat(5s);
-                    Unit* unit = SelectTarget(SelectTargetMethod::Random, 0, BoneStormMoveTargetSelector(me));
-                    if (!unit)
+                    std::list<Unit*> targets;
+                    SelectTargetList(targets, Is25ManRaid() ? 2 : 1, SelectTargetMethod::MaxDistance, 0, BoneStormMoveTargetSelector(me));
+
+                    Unit* unit = nullptr;
+                    if (!targets.empty())
+                        unit = targets.size() == 1 ? targets.front() : Acore::Containers::SelectRandomContainerElement(targets);
+                    else if ((unit = SelectTarget(SelectTargetMethod::MaxThreat, 0, 175.0f, true)))
                     {
-                        if ((unit = SelectTarget(SelectTargetMethod::MaxThreat, 0, 175.0f, true)))
-                            if (unit->GetPositionX() > -337.0f)
-                            {
-                                EnterEvadeMode();
-                                return;
-                            }
+                        if (unit->GetPositionX() > -337.0f)
+                        {
+                            EnterEvadeMode();
+                            return;
+                        }
                     }
+
                     if (unit)
                         me->GetMotionMaster()->MoveCharge(unit->GetPositionX(), unit->GetPositionY(), unit->GetPositionZ(), 25.0f, 1337);
                     break;