insights: add SeriesId to InsightSeries return type

Created by: CristinaBirkel

Closes #26378 (closed)

Description

Adds the seriesId to the InsightSeries so that it can be matched up with the series metadata in the dataSeriesDefinitions and seriesPresentation fields.

Testing Steps

Run a query like this and make sure the seriesId matches up between the 3 different locations listed above.

query {
    insightsDashboards(first:1) {
        nodes {
            id,
            title,
            views {
                nodes {
                    id,
                    dataSeries {
                        seriesId,
                    }
                    dataSeriesDefinitions {
                        ... on SearchInsightDataSeriesDefinition {
                            seriesId,
                        }
                        
                    }
                    presentation {
                        ... on LineChartInsightViewPresentation {
                        seriesPresentation {
                            seriesId,
                        }
                        }
                    }
                }
            }
        }
    }
}