pass syndromes as list-of-lists to cudaq decode_batch #236

Job	Run time
spdx-header-check	11s
unit-tests / py3.12	1m 7s
unit-tests-coverage	1m 15s
yapf-check	23s
multiprocessing-dataloader	56s
unit-tests / py3.11	1m 7s
unit-tests / py3.13	1m 9s
	6m 8s

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