Fix bug in SYCL team_reduce #3848
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This was only triggered for SYCL+CUDA with the increased concurrency in #3833 and large types to be reduced.
We need to make sure that
idxis within[start, start+maximum_work_range)and thatidxdoesn't exceedteam_size()-1which means that we need to limit the upper bound by the minimum, not the maximum.