Another 4.0 release notes update for AMQP 1.0

(cherry picked from commit 0d7960f)

Author: michaelklishin

release-notes/4.0.0.md

@@ -222,6 +222,10 @@ This section is incomplete and will be expanded as 4.0 approaches its release ca
 
    GitHub issue: [#9022](https://github.com/rabbitmq/rabbitmq-server/pull/9022)
 
+ * For AMQP 1.0, [resource alarms]() only block inbound `TRANSFER` frames instead of blocking all traffic.
+
+   GitHub issue: [#9022](https://github.com/rabbitmq/rabbitmq-server/pull/9022)
+
  * AMQP 1.0 clients now can manage topologies (queues, exchanges, bindings).
 
    GitHub issue: [#10559](https://github.com/rabbitmq/rabbitmq-server/pull/10559)