mixin: last rr make range interval configurable (#7876)

* chore: mixin last rr make range interval configurable

* chore: mixin last rr make range interval configurable fix

operations/mimir-mixin/config.libsonnet

@@ -284,7 +284,7 @@
             sum by (%(alert_aggregation_labels)s, deployment) (
               label_replace(
                 label_replace(
-                  sum by (%(alert_aggregation_labels)s, %(per_instance_label)s)(rate(container_cpu_usage_seconds_total[1m])),
+                  sum by (%(alert_aggregation_labels)s, %(per_instance_label)s)(rate(container_cpu_usage_seconds_total[%(recording_rules_range_interval)s])),
                   "deployment", "$1", "%(per_instance_label)s", "(.*)-(?:([0-9]+)|([a-z0-9]+)-([a-z0-9]+))"
                 ),
                 # The question mark in "(.*?)" is used to make it non-greedy, otherwise it