BUG: Raise MergeError when suffixes result in duplicate column names … #23319

Job	Run time
python-dev	-1s
Linux-32-bit	6m 4s
Linux-Musl	6m 3s
Pyodide build	6m 20s
windows-latest actions-311.yaml	6m 14s
python-freethreading	6m 17s
macos-13 actions-313.yaml	6m 22s
macos-13 actions-310.yaml	6m 20s
macos-14 actions-310.yaml	6m 19s
macos-14 actions-311.yaml	6m 18s
macos-14 actions-313.yaml	6m 19s
windows-latest actions-312.yaml	6m 7s
macos-13 actions-311.yaml	6m 21s
windows-latest actions-313.yaml	6m 6s
macos-13 actions-312.yaml	6m 17s
windows-latest actions-310.yaml	5m 57s
Minimum Versions	6m 16s
Pypy	1m 17s
Locale: it_IT	6m 18s
ubuntu-22.04 actions-312.yaml	11m 1s
macos-14 actions-312.yaml	6m 17s
Locale: zh_CN	6m 18s
ubuntu-22.04 actions-313.yaml	11m 0s
ubuntu-22.04 actions-310.yaml	11m 0s
Pyarrow Nightly	6m 17s
Future infer strings	11m 1s
Downstream Compat	5m 28s
Numpy Dev	6m 17s
ubuntu-24.04-arm actions-312.yaml	11m 1s
Future infer strings (without pyarrow)	11m 1s
ubuntu-22.04 actions-311.yaml	11m 1s
ubuntu-24.04-arm actions-313.yaml	11m 0s
ubuntu-24.04-arm actions-310.yaml	11m 1s
ubuntu-24.04-arm actions-311.yaml	11m 1s
	4h 7m 58s

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