Grafana heatmap panel is not able to render Prometheus NHCB (Native Histogram Custom Buckets)

### What happened? Prometheus and Grafana Mimir support Prometheus Native Histograms and Native Histograms Custom Buckets (NHCB). NHCB means that Prometheus the scraping converts classic histograms to native histogram custom buckets (and sends to Mimir, or Grafana Agent/Alloy send to Mimir) When Grafana heatmap panel query NHCB ` sum(rate(http_server_requests_seconds{dnsname="service-nhcb", status="200"}[2m])) ` the following reply is returned but nothing is shown on UI, only beginning is shown { "status": "success", "data": { "resultType": "matrix", "result": [{ "metric": {}, "histograms": [[1764322680, { "count": "1.384748303558631", "sum": "0.04097008651799473", "buckets": [[3, "-Inf", "0.03", "1.1374594483221832"], [0, "0.03", "0.05", "0.06576311841048256"], [0, "0.05", "0.1", "0.09491558209417905"], [0, "0.1", "0.15", "0.019152563682696504"], [0, "0.15", "0.2", "0.048305027366393"], [0, "0.2", "0.3", "0.019152563682696504"]] I assume Grafana can render NHCB returned by Mimir, so there might be differences in format Prometheus return and nothing is shown in UI ### What did you expect to happen? NHCB works in heatmaps ### Did this work before? Probably not ### How do we reproduce it? 1. Use Prometheus to convert classic histogram to NHCB setting Prometheus config 'convert_classic_histograms_to_nhcb: true' 2. Use Grafana to query NHCB into heatmap panel FROM pROMETHEUS 3. ### Is the bug inside a dashboard panel? NA ### Environment (with versions)? Grafana: 12.2 OS: WIndows Browser: Chrome Prometheus 3.7.1 and 3.8.0RC1 ### Grafana platform? A downloaded binary ### Datasource(s)? _No response_