Bug fix slow plot with datetimeindex #23244

Job	Run time
python-dev	0s
Linux-Musl	6m 54s
Linux-32-bit	8m 31s
python-freethreading	23m 56s
macos-14 actions-311.yaml	17m 9s
macos-13 actions-313.yaml	37m 27s
macos-14 actions-313.yaml	17m 45s
windows-latest actions-311.yaml	35m 48s
macos-14 actions-312.yaml	17m 12s
macos-13 actions-310.yaml	28m 36s
windows-latest actions-313.yaml	42m 42s
macos-13 actions-311.yaml	40m 8s
macos-13 actions-312.yaml	34m 35s
macos-14 actions-310.yaml	17m 48s
windows-latest actions-310.yaml	35m 50s
Pyodide build	6m 26s
Downstream Compat	6m 5s
Minimum Versions	23m 21s
Pypy	1m 22s
ubuntu-22.04 actions-311.yaml	26m 0s
Future infer strings (without pyarrow)	23m 32s
Locale: zh_CN	24m 39s
windows-latest actions-312.yaml	44m 12s
Future infer strings	29m 5s
ubuntu-24.04-arm actions-312.yaml	23m 29s
ubuntu-22.04 actions-313.yaml	31m 51s
ubuntu-24.04-arm actions-313.yaml	23m 12s
Locale: it_IT	23m 49s
Pyarrow Nightly	20m 12s
ubuntu-22.04 actions-310.yaml	28m 4s
ubuntu-22.04 actions-312.yaml	28m 2s
ubuntu-24.04-arm actions-311.yaml	23m 15s
Numpy Dev	16m 39s
ubuntu-24.04-arm actions-310.yaml	22m 35s
	13h 10m 11s

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