MB-8949: iterate batch msg directly
MB-8949: iterate batch msg directly

Since we need to adjust batch size value for DGM tap dump case,
we should not iterate batch messages based on batch size.

Change-Id: Ia42109f6628673fa4f06ecfea3048a894e39637c

couchbaselabs/couchbase-cli,couchbaselabs/couchbase-cli,couchbase/couchbase-cli,couchbaselabs/couchbase-cli,couchbase/couchbase-cli