insights: errored records are reported as pending in an insight series

Created by: coury-clark

https://sourcegraph.com/github.com/sourcegraph/sourcegraph/-/blob/enterprise/internal/insights/resolvers/insight_series_resolver.go?utm_product_name=GoLand&utm_product_version=GoLand#L81:54

Pending jobs should report the number of queries that are queued. Currently, they are also reporting jobs that are in an errored state.