Enable remote write receiver by default for the prometheus devenv block (#107179)

devenv/docker/blocks/prometheus/docker-compose.yaml

@@ -12,6 +12,7 @@
       --web.console.libraries=/usr/share/prometheus/console_libraries
       --web.console.templates=/usr/share/prometheus/consoles
       --web.config.file=/etc/prometheus/web.yml
+      --web.enable-remote-write-receiver
 
   node_exporter:
     image: prom/node-exporter
@@ -26,7 +27,7 @@
       FD_DATASOURCE: prom
 
   alertmanager:
-    image: prom/alertmanager 
+    image: prom/alertmanager
     volumes:
     - ${PWD}/docker/blocks/prometheus/alertmanager.yml:/etc/alertmanager/alertmanager.yml
     command: >