[BUG FIX] - Preserve buffs on summon by avoiding aura clears (#1958)

### Summary

- Add a preserveAuras flag to summon teleport helpers.
- Keep auras when using the summon command.
- Leave meeting stone behavior unchanged (auras can still be cleared
there).

### Motivation
Summon command was clearing buffs (e.g., Hellscream’s Warsong in ICC)
because auras were explicitly interrupted before teleporting. This
change keeps existing meeting stone behavior but preserves auras for the
summon path to avoid losing valid buffs.

### Details
Solve : 
https://github.com/mod-playerbots/mod-playerbots/issues/1862
https://github.com/mod-playerbots/mod-playerbots/issues/1942

### Testing
Go to ICC and téléport Bots

src/strategy/actions/AcceptInvitationAction.cpp

@@ -59,7 +59,7 @@ bool AcceptInvitationAction::Execute(Event event)
 
     if (sPlayerbotAIConfig->summonWhenGroup && bot->GetDistance(inviter) > sPlayerbotAIConfig->sightDistance)
     {
-        Teleport(inviter, bot);
+        Teleport(inviter, bot, true);
     }
     return true;
 }

src/strategy/actions/UseMeetingStoneAction.cpp

@@ -52,7 +52,7 @@ bool UseMeetingStoneAction::Execute(Event event)
     if (!goInfo || goInfo->entry != 179944)
         return false;
 
-    return Teleport(master, bot);
+    return Teleport(master, bot, false);
 }
 
 bool SummonAction::Execute(Event event)
@@ -70,16 +70,16 @@ bool SummonAction::Execute(Event event)
     {
         // botAI->GetAiObjectContext()->GetValue<GuidVector>("prioritized targets")->Set({});
         AI_VALUE(std::list<FleeInfo>&, "recently flee info").clear();
-        return Teleport(master, bot);
+        return Teleport(master, bot, true);
     }
 
-    if (SummonUsingGos(master, bot) || SummonUsingNpcs(master, bot))
+    if (SummonUsingGos(master, bot, true) || SummonUsingNpcs(master, bot, true))
     {
         botAI->TellMasterNoFacing("Hello!");
         return true;
     }
 
-    if (SummonUsingGos(bot, master) || SummonUsingNpcs(bot, master))
+    if (SummonUsingGos(bot, master, true) || SummonUsingNpcs(bot, master, true))
     {
         botAI->TellMasterNoFacing("Welcome!");
         return true;
@@ -88,7 +88,7 @@ bool SummonAction::Execute(Event event)
     return false;
 }
 
-bool SummonAction::SummonUsingGos(Player* summoner, Player* player)
+bool SummonAction::SummonUsingGos(Player* summoner, Player* player, bool preserveAuras)
 {
     std::list<GameObject*> targets;
     AnyGameObjectInObjectRangeCheck u_check(summoner, sPlayerbotAIConfig->sightDistance);
@@ -98,14 +98,14 @@ bool SummonAction::SummonUsingGos(Player* summoner, Player* player)
     for (GameObject* go : targets)
     {
         if (go->isSpawned() && go->GetGoType() == GAMEOBJECT_TYPE_MEETINGSTONE)
-            return Teleport(summoner, player);
+            return Teleport(summoner, player, preserveAuras);
     }
 
     botAI->TellError(summoner == bot ? "There is no meeting stone nearby" : "There is no meeting stone near you");
     return false;
 }
 
-bool SummonAction::SummonUsingNpcs(Player* summoner, Player* player)
+bool SummonAction::SummonUsingNpcs(Player* summoner, Player* player, bool preserveAuras)
 {
     if (!sPlayerbotAIConfig->summonAtInnkeepersEnabled)
         return false;
@@ -139,7 +139,7 @@ bool SummonAction::SummonUsingNpcs(Player* summoner, Player* player)
             Spell spell(player, spellInfo, TRIGGERED_NONE);
             spell.SendSpellCooldown();
 
-            return Teleport(summoner, player);
+            return Teleport(summoner, player, preserveAuras);
         }
     }
 
@@ -147,7 +147,7 @@ bool SummonAction::SummonUsingNpcs(Player* summoner, Player* player)
     return false;
 }
 
-bool SummonAction::Teleport(Player* summoner, Player* player)
+bool SummonAction::Teleport(Player* summoner, Player* player, bool preserveAuras)
 {
     // Player* master = GetMaster();
     if (!summoner)
@@ -208,7 +208,11 @@ bool SummonAction::Teleport(Player* summoner, Player* player)
 
                 player->GetMotionMaster()->Clear();
                 AI_VALUE(LastMovement&, "last movement").clear();
-                player->RemoveAurasWithInterruptFlags(AURA_INTERRUPT_FLAG_TELEPORTED | AURA_INTERRUPT_FLAG_CHANGE_MAP);
+
+                if (!preserveAuras)
+                    player->RemoveAurasWithInterruptFlags(AURA_INTERRUPT_FLAG_TELEPORTED |
+                                                          AURA_INTERRUPT_FLAG_CHANGE_MAP);
+
                 player->TeleportTo(mapId, x, y, z, 0);
 
                 if (botAI->HasStrategy("stay", botAI->GetState()))

src/strategy/actions/UseMeetingStoneAction.h

@@ -19,9 +19,9 @@ public:
     bool Execute(Event event) override;
 
 protected:
-    bool Teleport(Player* summoner, Player* player);
-    bool SummonUsingGos(Player* summoner, Player* player);
-    bool SummonUsingNpcs(Player* summoner, Player* player);
+    bool Teleport(Player* summoner, Player* player, bool preserveAuras);
+    bool SummonUsingGos(Player* summoner, Player* player, bool preserveAuras);
+    bool SummonUsingNpcs(Player* summoner, Player* player, bool preserveAuras);
 };
 
 class UseMeetingStoneAction : public SummonAction