refactor(queuev2): distinguish benign vs real shadow mismatches #296

Job	Run time
Golang integration test with running history queue v2	17m 32s
Golang integration test with cassandra	17m 43s
Golangci lint validate code is clean	5m 12s
Golang integration test with running history queue v2 with alert	17m 50s
IDL submodule points to master	12s
Golang integration ndc test with mysql	4m 7s
Golang unit test	11m 4s
Golang integration test with cassandra and pinot	12m 44s
Golang integration ndc test with postgres	4m 15s
Golang integration test with postgres	16m 26s
Golang async wf integration test with kafka	3m 41s
Golang integration test with mysql	16m 18s
Golang integration test with cassandra and elasticsearch v7	17m 45s
Golang integration test with sqlite	13m 57s
Golang integration ndc test with cassandra	4m 54s
Golang integration test with cassandra with opensearch v2	17m 27s
Golang integration test with etcd	-1s
	3h 1m 6s

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