Fix another issue with wrong edge tag update in `swap23`. #648

Job	Run time
mmg-debug / ci (ubuntu-20.04, on, off, on, off, int32_t)	1h 16m 30s
mmg-debug / ci (ubuntu-20.04, on, off, off, off, int32_t)	1h 38m 26s
mmg-debug / ci (ubuntu-20.04, off, off, on, off, int32_t)	1h 0m 52s
mmg-debug / ci (ubuntu-20.04, off, off, off, off, int32_t)	1h 13m 50s
mmg-debug / ci (macos-12, on, off, on, off, int32_t)	36m 14s
mmg-debug / ci (macos-12, on, off, off, off, int32_t)	53m 42s
mmg-debug / ci (macos-12, off, off, on, off, int32_t)	35m 17s
mmg-debug / ci (macos-12, off, off, off, off, int32_t)	43m 7s
mmg-debug / ci (ubuntu-20.04, off, off, off, on, int32_t)	4m 13s
mmg-debug / ci (macos-14, off, off, off, on, int32_t)	4m 27s
mmg-debug / ci (ubuntu-20.04, off, on, on, off, int32_t)	1h 1m 33s
mmg-debug / ci (macos-12, off, on, on, off, int32_t)	32m 9s
mmg-debug / ci (windows-2022, off, off, off, off, int32_t)	56m 13s
mmg-debug / ci (windows-2022, on, off, off, off, int32_t)	52m 11s
mmg-debug / ci (windows-2022, off, on, off, off, int32_t)	53m 16s
mmg-debug / ci (ubuntu-20.04, on, on, on, on, int64_t)	5m 5s
mmg-debug / ci (ubuntu-20.04, off, off, on, on, int64_t)	1h 11m 44s
mmg-debug / ci (ubuntu-20.04, off, off, off, off, int64_t)	2m 27s
mmg-debug / ci (macos-14, on, on, on, on, int64_t)	5m 35s
mmg-debug / ci (macos-12, off, off, off, off, int64_t)	4m 17s
mmg-debug / ci (windows-2022, on, on, off, off, int64_t)	4m 35s
mmg-debug / ci (windows-2022, off, off, off, off, int64_t)	4m 55s
mmg-debug / upload_coverage	2m 34s
	14h 3m 12s

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