fix(Core/Vehicle): fix crash when using MC on a player riding a vehicle (#24551)

Co-authored-by: Shauren <shauren.trinity@gmail.com>

src/server/game/Entities/Unit/Unit.cpp

@@ -18618,7 +18618,7 @@ bool Unit::SetCharmedBy(Unit* charmer, CharmType type, AuraApplication const* au
     ASSERT(type != CHARM_TYPE_POSSESS || charmer->IsPlayer());
     if (type == CHARM_TYPE_VEHICLE && !IsVehicle()) // pussywizard
         throw 1;
-    ASSERT((type == CHARM_TYPE_VEHICLE) == IsVehicle());
+    ASSERT((type == CHARM_TYPE_VEHICLE) == (GetVehicleKit() && GetVehicleKit()->IsControllableVehicle()));
 
     LOG_DEBUG("entities.unit", "SetCharmedBy: charmer {} ({}), charmed {} ({}), type {}.",
         charmer->GetEntry(), charmer->GetGUID().ToString(), GetEntry(), GetGUID().ToString(), uint32(type));

src/server/game/Entities/Vehicle/Vehicle.cpp

@@ -26,6 +26,7 @@
 #include "TemporarySummon.h"
 #include "Unit.h"
 #include "Util.h"
+#include <algorithm>
 
 Vehicle::Vehicle(Unit* unit, VehicleEntry const* vehInfo, uint32 creatureEntry) :
     _me(unit), _vehicleInfo(vehInfo), _usableSeatNum(0), _creatureEntry(creatureEntry), _status(STATUS_NONE)
@@ -562,6 +563,11 @@ bool Vehicle::IsVehicleInUse()
     return false;
 }
 
+bool Vehicle::IsControllableVehicle() const
+{
+    return std::ranges::any_of(Seats, [](auto const& seat) { return seat.second.SeatInfo->CanControl(); });
+}
+
 void Vehicle::TeleportVehicle(float x, float y, float z, float ang)
 {
     _me->GetMap()->LoadGrid(x, y);

src/server/game/Entities/Vehicle/Vehicle.h

@@ -51,6 +51,7 @@ public:
     void RemoveAllPassengers();
     void Dismiss();
     bool IsVehicleInUse();
+    [[nodiscard]] bool IsControllableVehicle() const;
     void TeleportVehicle(float x, float y, float z, float ang);
 
     SeatMap Seats;