BUG: identity checking NA in map incorrect #18984

Job	Run time
Linux-Musl	16m 55s
Pyodide build	24m 58s
macos-13 actions-310.yaml	25m 2s
macos-13 actions-311.yaml	25m 3s
macos-14 actions-310.yaml	18m 8s
macos-14 actions-311.yaml	21m 30s
macos-13 actions-312.yaml	25m 7s
macos-14 actions-312.yaml	17m 32s
windows-latest actions-311.yaml	24m 59s
windows-latest actions-312.yaml	24m 53s
windows-latest actions-310.yaml	25m 0s
Linux-32-bit	19m 9s
python-dev (macOS-13)	24m 59s
python-dev (ubuntu-22.04)	23m 34s
python-dev (macOS-14)	14m 44s
python-dev (windows-latest)	25m 1s
python-freethreading	24m 54s
ubuntu-latest actions-310.yaml	29m 42s
Minimum Versions	24m 59s
ubuntu-latest actions-311.yaml	29m 41s
Future infer strings (without pyarrow)	29m 44s
Locale: zh_CN	24m 58s
Locale: it_IT	24m 55s
Downstream Compat	6m 29s
Numpy Dev	17m 3s
Pyarrow Nightly	21m 14s
ubuntu-latest actions-312.yaml	29m 42s
Pypy	1m 26s
Future infer strings	29m 42s
	10h 51m 3s

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