[Service Bus] Update changelog (#12227)

This PR updates the changelog for the changes introduced in PRs the past couple of days

sdk/servicebus/service-bus/CHANGELOG.md

@@ -19,10 +19,11 @@
   [PR 11995](https://github.com/Azure/azure-sdk-for-js/pull/11995)
 - Internal improvement - For the operations depending on `$management` link such as peek or lock renewals, the listeners for the "sender_error" and "receiver_error" events were added to the link for each new request made before the link is initialized which would have resulted in too many listeners and a warning such as `MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 sender_error listeners added to [Sender]. Use emittr.setMaxListeners() to increase limit`(same for `receiver_error`). This has been improved such that the listeners are reused.
   [PR 11738](https://github.com/Azure/azure-sdk-for-js/pull/11738)
+- All methods that take an array as input are updated to ensure they gracefully do a no-op rather than throw errors. For example: `receiveDeferredMessages()`, `scheduleMessages()` and `cancelScheduledMessages()`.
 
 ### Breaking changes
 
-- The methods to complete, abandon, defer and deadletter a message along with the method to renew message lock have been moved from the message to the receiver.
+- The methods to complete, abandon, defer and deadletter a message along with the method to renew message lock have been moved from the message to the receiver. With this, we now have additional validation to ensure that a peeked message cannot be used with these methods.
 - The word "Message" is added to all methods and interfaces related to creating and sending a batch of messages for clarity based on user studies:
   - The `createBatch` method on the sender is renamed to `createMessageBatch`.
   - The interface `CreateBatchOptions` followed by the options that are passed to the `createBatch` method is renamed to `CreateMessageBatchOptions`.
@@ -37,7 +38,7 @@
 - `ServiceBusSender.scheduleMessages` method signature updated: `scheduledEnqueueTimeUtc` and `messages` parameters are swapped as the messages are the primary object that is being worked with.
 - `NamespaceProperties` interface property "messageSku" type changed from "string" to string literal type "Basic" | "Premium" | "Standard" to reflect the limited types it supports.
 - `NamespaceProperties` interface property "namespaceType" has been removed as it does not provide any value.
-- The property `subQueue` in the options passed to the `createReceiver()` method is renamed to `subQueueType` to reflect that the value is restricted and not meant to contain any queue names.
+- The property `subQueue` in the options passed to the `createReceiver()` method is renamed to `subQueueType` to reflect that the value is restricted and not meant to contain any queue names. The corresponding type `SubQueue` is removed in favor of inlining the string literals that represent valid values.
 - Interfaces corresponding to the returned responses from the methods under the `ServiceBusAdministrationClient` such as `NamespacePropertiesResponse`, `QueueResponse`, `TopicRuntimePropertiesResponse` have been removed in favor of using generic type `WithResponse<T>` for a cleaner API surface.
   [PR 10491](https://github.com/Azure/azure-sdk-for-js/pull/10491)
 - Updated the `update{Entity}` methods under `ServiceBusAdministrationClient` with relevant param names and types, more docs.
@@ -45,7 +46,7 @@
 - The raw responses(`_response`) in the returned objects from any of the methods under the `ServiceBusAdministrationClient` have been updated to return only the `{request, status, headers}`, properties such as `parsedHeaders`, `parsedBody` have been removed.
   [PR 12015](https://github.com/Azure/azure-sdk-for-js/pull/12015)
 - `viaPartitionKey` property of interface `ServiceMessageBus` has been removed until we implement the [Transactions feature of Service Bus](https://docs.microsoft.com/azure/service-bus-messaging/service-bus-transactions).
-- Removed `AmqpAnnotatedMessage`, `AmqpMessageHeaders`, `AmqpMessageProperties` interfaces in favour of the ones from `@azure/core-amqp`. This is part of the move from `@azure/core-amqp` version update from 1.1.x to 2.0.0-beta.y.
+- Removed `AmqpAnnotatedMessage`, `AmqpMessageHeaders`, `AmqpMessageProperties` interfaces in favour of the ones from `@azure/core-amqp`. This is part of the move from `@azure/core-amqp` version update from 1.1.x to 2.0.0-beta.y. As part of this, `userId` will not be made available as part of `AmqpMessageProperties` until its type is fixed in the upstream `rhea` library.
   [PR 12091](https://github.com/Azure/azure-sdk-for-js/pull/12091)
 
 ## 7.0.0-preview.7 (2020-10-07)