Read friends list second call

[arousta]

This PR reproduces the current issue that we observe after a second call to the ReadFriendsList() functions, the GetFriends() won't return the list of friends.

The bug is here in the FUserManagerEOS::AddFriend() function:

	// Add this friend as a remote player if we haven't already (this will grab user info)
	if (!UniqueNetIdToAttributeAccessMap.Contains(FriendNetId))
	{
		AddRemotePlayer(LocalUserNum, EpicAccountId, FriendRef);
	}

The UniqueNetIdToAttributeAccessMap basically contains the cached information of friends which is populated during the first call to the ReadFriendsList().

During the second call, here we skip calling the AddRemotePlayer() function to avoid making unnecessary requests for obtainig the friends info which we already have in our cache.

However the problem is that we've forgotten to set the friend info using our cached values in the else block. The fix would be to move a piece of code from the FUserManagerEOS::ReadUserInfo() to here:

	// Add this friend as a remote player if we haven't already (this will grab user info)
	if (!UniqueNetIdToAttributeAccessMap.Contains(FriendNetId))
	{
		AddRemotePlayer(LocalUserNum, EpicAccountId, FriendRef);
	}
        else
        {
        // set user info from the cached info
            IAttributeAccessInterfaceRef AttributeAccessRef = UniqueNetIdToAttributeAccessMap[FriendNetId];
            FOnlineFriendEOSPtr FriendPtr = LocalUser.FriendsList->GetByNetId(FriendNetId);
            FriendPtr->UpdateInternalAttributes(AttributeAccessRef->GetInternalAttributes());
        }

[arousta]

@SebBergy Here's the minimal change that reproduces the issue. I have the log for running this on my local machin which shows after the second call to the ReadFriendsList() the GetFriendsList() returns zero friends.

[SebBergy]

This issue was due to a bug in UE that is now fixed in UE5.4 Closing this PR.