UCP/RNDV: Skip PUT fence for ordered transports (#11673)

Add UCT_IFACE_FLAG_PUT_AM_ORDER and select direct ATP only when every
RNDV data lane provides this capability. Preserve the fenced fallback
for SRD and mixed ordered/unordered lanes.

Add protocol coverage for the ordered path, unordered fallback, and
explicit SRD transport.

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Signed-off-by: Roie Danino <rdanino@nvidia.com>