Add log message when `DedupeIntegration` is dropping an error. #3273

Job	Run time
Gevent (pinned) (3.12, ubuntu-22.04)	5m 19s
Gevent (pinned) (3.8, ubuntu-22.04)	6m 21s
Gevent (pinned) (3.11, ubuntu-22.04)	5m 5s
Gevent (pinned) (3.10, ubuntu-22.04)	4m 46s
Gevent (pinned) (3.6, ubuntu-22.04)	4m 1s
All pinned Gevent tests passed	3s
	25m 35s

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