fs/smb/client: avoid querying SMB2_OP_QUERY_WSL_EA for SMB3 POSIX

Avoid extra roundtrip

Cc: stable@vger.kernel.org
Acked-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
Signed-off-by: Ralph Boehme <slow@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>