API: ignore empty range/object dtype in Index setop operations (string dtype compat) #21638

Job	Run time
Pyodide build	8m 9s
Linux-32-bit	7m 56s
python-freethreading	8m 14s
python-dev (macOS-13)	8m 13s
python-dev (macOS-14)	8m 12s
python-dev (ubuntu-22.04)	8m 10s
python-dev (windows-latest)	8m 3s
macos-13 actions-310.yaml	8m 15s
macos-13 actions-311.yaml	8m 12s
macos-13 actions-312.yaml	8m 15s
macos-14 actions-310.yaml	8m 12s
macos-14 actions-311.yaml	8m 11s
macos-14 actions-312.yaml	8m 14s
windows-latest actions-311.yaml	8m 9s
windows-latest actions-312.yaml	8m 9s
windows-latest actions-310.yaml	8m 11s
Linux-Musl	7m 56s
Minimum Versions	8m 12s
Future infer strings (without pyarrow)	12m 55s
Locale: zh_CN	8m 11s
Locale: it_IT	8m 12s
Downstream Compat	5m 51s
Numpy Dev	8m 12s
Pyarrow Nightly	8m 10s
Future infer strings	12m 54s
Pypy	1m 24s
ubuntu-22.04 actions-310.yaml	12m 54s
ubuntu-22.04 actions-311.yaml	12m 55s
ubuntu-22.04 actions-312.yaml	12m 55s
ubuntu-24.04-arm actions-311.yaml	12m 54s
ubuntu-24.04-arm actions-312.yaml	12m 55s
ubuntu-24.04-arm actions-310.yaml	12m 54s
	4h 50m 9s

Provide feedback