Support concat new tokens mask and previous token mask for enumerated shape CoreML #4894

Job	Run time
test-models-cuda (add_mul) / linux-job	21m 19s
test-models-cuda (resnet18) / linux-job	21m 54s
test-executorch-cuda-build-12.8 / linux-job	20m 22s
test-executorch-cuda-build-12.6 / linux-job	18m 58s
test-models-cuda (sdpa) / linux-job	21m 11s
test-models-cuda (linear) / linux-job	21m 15s
test-models-cuda (conv1d) / linux-job	21m 20s
test-models-cuda (add) / linux-job	21m 5s
test-executorch-cuda-build-13.0 / linux-job	18m 43s
test-executorch-cuda-build-12.9 / linux-job	22m 10s
test-model-cuda-e2e	-1s
export-model-cuda-artifact	-10s
check-all-cuda-builds	3s
	3h 28m 9s

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