Add warning about send-only endpoints not supported in older versions of TransactionalSession (#7236)

* Create index_sendonly_transactionalsession_[,3.1).partial.md

* Update index_sendonly_transactionalsession_[,3.1).partial.md

* Added the partial to transactional session page

* Update index.md

Author: poornimanayar

nservicebus/transactional-session/index.md

@@ -34,6 +34,8 @@ The `TransactionalSession`, when combined with [outbox](/nservicebus/outbox), so
 
 ## Usage
 
+partial: sendonly
+
 To use the transactional session, first install the [transactional session package for a supported persister](/nservicebus/transactional-session/persistences) in the project.
 
 Next, enable the session integration on the endpoint as follows:

nservicebus/transactional-session/index_sendonly_transactionalsession_[,3.2).partial.md

@@ -0,0 +1,5 @@
+> [!WARNING]
+> Send-only endpoints are supported with Transactional Session starting from version 3.3.0. In earlier versions, attempting to use a transactional session with a send-only endpoint will result in an exception.
+```
+LocalQueueAddress isn't available for send-only endpoints.
+```