Game/Entities: Fix math problem "Disk Point Picking" in GetRandomPoint (#17577)

src/server/game/Entities/Object/Object.cpp

@@ -1593,7 +1593,8 @@ void WorldObject::GetRandomPoint(const Position &pos, float distance, float &ran
 
     // angle to face `obj` to `this`
     float angle = (float)rand_norm()*static_cast<float>(2*M_PI);
-    float new_dist = (float)rand_norm()*static_cast<float>(distance);
+    float new_dist = (float)rand_norm() + (float)rand_norm();
+    new_dist = distance * (new_dist > 1 ? new_dist - 2 : new_dist);
 
     rand_x = pos.m_positionX + new_dist * std::cos(angle);
     rand_y = pos.m_positionY + new_dist * std::sin(angle);