Sort valid transports generated by testing plugin

Author: tchssk

testing/codegen/scenarios.go

@@ -175,9 +175,7 @@ func buildScenariosData(svcData *service.Data, root *expr.RootExpr, svc *expr.Se
 		transportSet["jsonrpc-sse"] = true
 		transportSet["jsonrpc-ws"] = true
 	}
-	for t := range transportSet {
-		data.ValidTransports = append(data.ValidTransports, t)
-	}
+	data.ValidTransports = slices.Sorted(maps.Keys(transportSet))
 
 	// Build method data with available transports
 	for i, m := range svc.Methods {