refactor: Tweak `full_chain_odd.py` #18939

Job	Run time
cuda	7m 5s
linux_ubuntu	13m 12s
linux-nodeps (centos8-lcg100-gcc10)	18m 17s
linux_ubuntu_extra (ubuntu2004, 17)	20m 12s
macos	45m 20s
linux_ubuntu_extra (ubuntu2204_cpp20, 20)	15m 24s
sycl	6m 46s
linux_ubuntu_extra (ubuntu2204_clang, 17)	15m 0s
linux_examples_test	11m 35s
linux_physmon	32m 41s
linux_physmon_perf_report	0s
	3h 5m 32s

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