cPawn: Reset last ground height in ResetPosition (#4261)

Prevents fall damage after teleporting/portaling to a lower height.

Fixes #3457

src/Entities/Player.cpp

@@ -1650,7 +1650,6 @@ void cPlayer::TeleportToCoords(double a_PosX, double a_PosY, double a_PosZ)
 	{
 		ResetPosition({a_PosX, a_PosY, a_PosZ});
 		FreezeInternal(GetPosition(), false);
-		m_LastGroundHeight = a_PosY;
 		m_bIsTeleporting = true;
 
 		m_World->BroadcastTeleportEntity(*this, GetClientHandle());