Ra metrics fixes and release notes (backport #14739)#14759

mkuratczyk merged 1 commit intov4.2.xrabbitmq/rabbitmq-server:v4.2.xfrom

mergify/bp/v4.2.x/pr-14739rabbitmq/rabbitmq-server:mergify/bp/v4.2.x/pr-14739Copy head branch name to clipboard