Datasources: Enable native histograms for datasource response size metric (#87962)

devenv/docker/blocks/self-instrumentation/docker-compose.yaml

@@ -7,6 +7,7 @@
     command: >
       --enable-feature=remote-write-receiver
       --enable-feature=exemplar-storage
+      --enable-feature=native-histograms
       --config.file=/etc/prometheus/prometheus.yml
       --storage.tsdb.path=/prometheus
     volumes:
@@ -45,7 +46,7 @@
       - --server.http.listen-addr=0.0.0.0:12345
       - /etc/agent/config.river
     volumes:
-      - ./docker/blocks/self-instrumentation/agent.flow:/etc/agent/config.river 
+      - ./docker/blocks/self-instrumentation/agent.flow:/etc/agent/config.river
     ports:
       - "12345:12345"
       - "12347:12347"

devenv/docker/blocks/self-instrumentation/prometheus.yaml

@@ -4,6 +4,7 @@ global:
 
 scrape_configs:
   - job_name: grafana
+    scrape_classic_histograms: true
     static_configs:
       - targets:
         - host.docker.internal:3000