Incorrect Metric Type for elasticsearch_data_stream_store_size_bytes

[b2ronn]

I have noticed a potential issue with the metric elasticsearch_data_stream_store_size_bytes in the codebase. According to my understanding, this metric should be classified as a Gauge, but in the code, it is specified as CounterValue. This discrepancy in the metric type could lead to incorrect monitoring and interpretation of data stream store size.

			{
				Type: prometheus.CounterValue,
				Desc: prometheus.NewDesc(
					prometheus.BuildFQName(namespace, "data_stream", "store_size_bytes"),
					"Store size of data stream",
					defaultDataStreamLabels, nil,
				),
				Value: func(dataStreamStats DataStreamStatsDataStream) float64 {
					return float64(dataStreamStats.StoreSizeBytes)
				},
				Labels: defaultDataStreamLabelValues,
			},