Add extensibility RN

Author: quinntracy

content/en/docs/releasenotes/studio-pro/11/11.13.md

@@ -38,6 +38,7 @@ This setting takes effect immediately, with one exception: if you are using the
 - A notification is shown when the MCP server starts, and the active port is visible in the status bar.
 - We added support for interrupting and non-interrupting behavior on the workflow Timer Event Sub-Process Start Event. When configured as interrupting, the Event Sub-Process will interrupt the parent workflow, terminating all active execution paths within the global scope — including activities in the main process and any nested sub-processes — before initiating the Event Sub-Process flow. When configured as non-interrupting, the Event Sub-Process runs in parallel with the parent workflow without affecting its execution.
 - The External Database Connector is now built into Studio Pro. You no longer need to download the module from the Marketplace.
+- Web extensions now must include `@mendix/model-access-registry` in the external build configuration. 
 
 ### Improvements