[SYCL][Graph][CUDA][HIP] UR Coverity fixes to CUDA/HIP command-buffer implementation (#12723)
Test changes to the UR CUDA/HIP adapters in
https://github.com/oneapi-src/unified-runtime/pull/1340 that fix
Coverity issues in the implementation of kernel command update in a
command-buffer.
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Co-authored-by: Kenneth Benzie (Benie) <k.benzie@codeplay.com>