TST(string dtype): Resolve xfails in test_from_dummies #24419

Job	Run time
Linux-32-bit	34s
Linux-Musl	33s
python-dev	0s
Pyodide build	32s
windows-latest actions-311.yaml	21s
windows-latest actions-313.yaml	22s
macos-14 actions-313.yaml	32s
macos-14 actions-311.yaml	35s
macos-13 actions-311.yaml	6s
macos-13 actions-313.yaml	27s
macos-14 actions-312.yaml	33s
macos-13 actions-312.yaml	27s
macos-13 actions-310.yaml	1s
windows-latest actions-310.yaml	16s
windows-latest actions-312.yaml	21s
ubuntu-24.04 actions-310.yaml	19s
Numpy Dev	34s
macos-14 actions-310.yaml	33s
ubuntu-24.04 actions-312.yaml	19s
Future infer strings	18s
ubuntu-24.04-arm actions-310.yaml	17s
ubuntu-24.04 actions-311.yaml	17s
ubuntu-24.04-arm actions-311.yaml	18s
ubuntu-24.04-arm actions-312.yaml	18s
ubuntu-24.04-arm actions-313.yaml	18s
Freethreading	34s
Minimum Versions	35s
ubuntu-24.04 actions-313.yaml	34s
Locale: zh_CN	34s
Locale: it_IT	35s
Downstream Compat	35s
Pyarrow Nightly	33s
Future infer strings (without pyarrow)	19s
	13m 30s

Provide feedback