Fix remaining CUDA testing #1457
Description
- LuxLib: needs fix: regression in non-fast scalar indexing support JuliaDiff/ForwardDiff.jl#760
- Some of the Lux tests have also started to fail presumably due to change in LuxTestUtils
- https://buildkite.com/julialang/lux-dot-jl/builds/6513/steps/canvas?jid=0198fdbb-896c-45a6-880e-ac9def032bc3#0198fdbb-896c-45a6-880e-ac9def032bc3/7-1924 change to approx, quite flaky on gpu
- NCCL tests fixed by fix: NCCL import of
@checked+ support for CUDA 13 JuliaGPU/NCCL.jl#63