Fix stuck group followers and druid mount preparation

src/server/game/World/ClientlessLuaEngine.cpp

@@ -1,5 +1,6 @@
 #include "AdventureProfessionPolicy.h"
 #include "ClientlessLuaEngine.h"
+#include "ClientlessMountPreparation.h"
 #include "AdventureRotationPolicy.h"
 #include "ClientlessPlayerMgr.h"
 #include "ClientlessLoginRecovery.h"
@@ -647,6 +648,8 @@ bool ClientlessLuaEngine::PrepareGroundMount(Player* player, float travelDistanc
         return false;
     if (travelDistance < profile->GroundMountMinDistance || !player->IsOutdoors())
         return false;
+    if (!ClientlessMountPreparation::LeaveDruidForm(player))
+        return false;
     if (player->IsMounted())
         return true;