BUG: Copy attrs on pd.merge() #23744

Job	Run time
Linux-Musl	2m 43s
python-dev	0s
Pyodide build	2m 43s
Linux-32-bit	2m 44s
windows-latest actions-312.yaml	2m 42s
macos-14 actions-313.yaml	2m 46s
macos-13 actions-311.yaml	2m 46s
windows-latest actions-313.yaml	2m 42s
macos-13 actions-313.yaml	2m 45s
macos-13 actions-310.yaml	2m 46s
windows-latest actions-310.yaml	2m 41s
macos-14 actions-310.yaml	2m 45s
windows-latest actions-311.yaml	2m 41s
macos-13 actions-312.yaml	2m 46s
macos-14 actions-311.yaml	2m 48s
macos-14 actions-312.yaml	2m 44s
Pypy	1m 37s
Pyarrow Nightly	3m 3s
Future infer strings	2m 46s
Freethreading	3m 1s
Locale: it_IT	2m 45s
Minimum Versions	2m 45s
Locale: zh_CN	2m 46s
ubuntu-24.04 actions-312.yaml	2m 44s
ubuntu-24.04 actions-311.yaml	2m 45s
ubuntu-24.04 actions-313.yaml	2m 44s
ubuntu-24.04-arm actions-310.yaml	2m 45s
ubuntu-24.04 actions-310.yaml	2m 45s
Downstream Compat	3m 11s
Numpy Dev	3m 3s
ubuntu-24.04-arm actions-311.yaml	2m 43s
ubuntu-24.04-arm actions-312.yaml	2m 43s
ubuntu-24.04-arm actions-313.yaml	2m 43s
Future infer strings (without pyarrow)	2m 46s
	1h 30m 37s

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