fix std/var with complex array #23856

Job	Run time
python-dev	0s
Pyodide build	23m 43s
Linux-Musl	15m 36s
Linux-32-bit	18m 38s
windows-latest actions-311.yaml	43m 22s
windows-latest actions-313.yaml	49m 48s
macos-13 actions-310.yaml	39m 12s
macos-13 actions-312.yaml	49m 25s
macos-13 actions-311.yaml	29m 31s
macos-13 actions-313.yaml	59m 30s
macos-14 actions-313.yaml	25m 1s
macos-14 actions-311.yaml	29m 2s
macos-14 actions-310.yaml	26m 0s
windows-latest actions-312.yaml	41m 46s
macos-14 actions-312.yaml	30m 38s
windows-latest actions-310.yaml	40m 21s
ubuntu-24.04-arm actions-310.yaml	40m 27s
Future infer strings	52m 31s
ubuntu-24.04-arm actions-311.yaml	38m 7s
Minimum Versions	28m 1s
Pyarrow Nightly	20m 50s
ubuntu-24.04 actions-312.yaml	50m 20s
ubuntu-24.04-arm actions-312.yaml	38m 51s
Downstream Compat	6m 22s
Future infer strings (without pyarrow)	44m 33s
ubuntu-24.04-arm actions-313.yaml	39m 34s
Freethreading	21m 42s
ubuntu-24.04 actions-313.yaml	55m 20s
ubuntu-24.04 actions-310.yaml	54m 8s
Locale: it_IT	30m 9s
Pypy	1m 55s
Locale: zh_CN	30m 38s
Numpy Dev	16m 58s
ubuntu-24.04 actions-311.yaml	48m 42s
	19h 0m 41s

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