UCT/BUILD: Compile self transport regardless on knem.
UCT/BUILD: Compile self transport regardless on knem.

If knem headers are not present, UCX would always complain that "Device
'all' is not available" because self is also not compiled.

sergsagal1/ucx_rocm,shssf/ucx,shssf/ucx,sergsagal1/ucx_rocm,sergsagal1/ucx_rocm,shssf/ucx