Split of "[re] Drop mig capability from tests" (#20330) #14079

Job	Run time
Get changed files / get-changed-files	5s
CI run decision / decide	33s
test-executorch-cuda-build-12.6 / linux-job	18m 15s
test-models-cuda / linux-job	47m 17s
test-executorch-cuda-build-13.0 / linux-job	16m 49s
export-model-cuda-artifact	-1s
test-cuda-pybind	-1s
test-model-cuda-e2e	-1s
unittest-cuda / linux-job	53m 6s
check-all-cuda-builds	8s
	2h 16m 10s

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