chore: backport saga fix

from https://github.com/apache/camel-k/pull/3883
diff --git a/generic-examples/saga/Flight.java b/generic-examples/saga/Flight.java
index 5aacbd9..76ac541 100644
--- a/generic-examples/saga/Flight.java
+++ b/generic-examples/saga/Flight.java
@@ -31,7 +31,9 @@
 
 		rest("/api").post("/flight/buy")
 			.param().type(RestParamType.header).name("id").required(true).endParam()
-			.route()
+			.to("direct:buy");
+
+		from("direct:buy")
 			.saga()
 				.propagation(SagaPropagation.MANDATORY)
 				.option("id", header("id"))
diff --git a/generic-examples/saga/Payment.java b/generic-examples/saga/Payment.java
index 7eade73..b8e606e 100644
--- a/generic-examples/saga/Payment.java
+++ b/generic-examples/saga/Payment.java
@@ -31,7 +31,9 @@
 		rest("/api/").post("/pay")
                     .param().type(RestParamType.query).name("type").required(true).endParam()
                     .param().type(RestParamType.header).name("id").required(true).endParam()
-                    .route()
+                    .to("direct:pay");
+
+		from("direct:pay")
                     .saga()
                         .propagation(SagaPropagation.MANDATORY)
                         .option("id", header("id"))
@@ -45,4 +47,4 @@
                 from("direct:cancelPayment")
                     .log("Payment #${header.id} has been cancelled");
 	}
-}
+}
\ No newline at end of file
diff --git a/generic-examples/saga/README.md b/generic-examples/saga/README.md
index 56ba1f4..8b850eb 100644
--- a/generic-examples/saga/README.md
+++ b/generic-examples/saga/README.md
@@ -15,14 +15,14 @@
 
 * Start the three demo services
 ```
-kamel run -d camel-lra Payment.java
-kamel run -d camel-lra Flight.java
-kamel run -d camel-lra Train.java
+kamel run -d camel:lra Payment.java
+kamel run -d camel:lra Flight.java
+kamel run -d camel:lra Train.java
 ```
 
 * Start the saga application
 ```
-kamel run -d camel-lra Saga.java
+kamel run -d camel:lra -d camel:direct Saga.java
 ```
 
 Then you can use ```kamel logs saga``` to check the output of the transactions.
diff --git a/generic-examples/saga/Train.java b/generic-examples/saga/Train.java
index b46704d..1b42015 100644
--- a/generic-examples/saga/Train.java
+++ b/generic-examples/saga/Train.java
@@ -31,7 +31,9 @@
 
 		rest("/api/").post("/train/buy/seat")
                     .param().type(RestParamType.header).name("id").required(true).endParam()
-                    .route()
+                    .to("direct:buySeat");
+
+		from("direct:buySeat")
                     .saga()
                         .propagation(SagaPropagation.SUPPORTS)
                         .option("id", header("id"))