TST (string dtype): resolve xfails for frame methods #21561

Job	Run time
Linux-32-bit	19m 7s
Pyodide build	22m 52s
Linux-Musl	21m 44s
python-freethreading	22m 37s
python-dev (macOS-13)	17m 51s
python-dev (macOS-14)	10m 2s
python-dev (ubuntu-22.04)	20m 28s
python-dev (windows-latest)	23m 57s
macos-13 actions-310.yaml	23m 37s
macos-13 actions-311.yaml	25m 5s
macos-13 actions-312.yaml	28m 44s
macos-14 actions-310.yaml	17m 2s
macos-14 actions-311.yaml	16m 51s
macos-14 actions-312.yaml	20m 3s
windows-latest actions-311.yaml	34m 23s
windows-latest actions-312.yaml	45m 54s
windows-latest actions-310.yaml	34m 14s
Minimum Versions	23m 29s
Future infer strings (without pyarrow)	37m 51s
Locale: zh_CN	23m 31s
Locale: it_IT	24m 39s
Downstream Compat	5m 50s
Numpy Dev	17m 1s
Pyarrow Nightly	20m 24s
Future infer strings	47m 24s
Pypy	1m 38s
ubuntu-22.04 actions-310.yaml	45m 8s
ubuntu-22.04 actions-311.yaml	41m 13s
ubuntu-22.04 actions-312.yaml	45m 52s
ubuntu-24.04-arm actions-312.yaml	36m 50s
ubuntu-24.04-arm actions-311.yaml	32m 13s
ubuntu-24.04-arm actions-310.yaml	33m 29s
	14h 1m 3s

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