2.54.0
(feat): Support x-fern-server on AsyncAPI channels for multi-URL environments.
When a channel specifies a baseUrl (via x-fern-server) that maps to a
multi-URL environment in the IR, the C# generator now automatically derives
websocket environments from the IR’s environment definitions. This eliminates
the need for the temporary-websocket-environments workaround in
generators.yml.
