Remove return in process_internal_client_message_stream

This only reason that this errors is due to an early client disconnect.  When that
happens it kills the rest of the client message processing for any other or new
connecting clients.

inscriptions/src/service/client_state/mod.rs

@@ -335,7 +335,6 @@ impl InternalClientMessageProcessingTask {
                     "internal client message processing encountered an error: {}",
                     err,
                 );
-                return;
             }
         }
     }