Update error message on navigate

Test: n/a
Bug: 280236412
Relnote: "The error message has been updated when navigating on a NavController with no navigation graph set."
Change-Id: If06be7d4888aa654842adfdd961ce04b577ddb07

Author: claraf3

navigation/CHANGELOG.md

@@ -14,9 +14,15 @@
 # Behavior Change
 # External Contributions
 
-# Unreleased
+## Unreleased
+
+### Bug Fixes
+
+- Updated the error message and exception type when navigating on a NavController with no
+  navigation graph set.
 
 ### Dependency Updates
 
-* Changed dependency of Activity library from version 1.6.1 to version 1.7.1.
+- Changed dependency of Activity library from version 1.6.1 to version 1.7.1.
+
 

navigation/navigation-runtime/src/main/java/androidx/navigation/NavController.kt

@@ -1605,7 +1605,7 @@ public open class NavController(
      * @param navOptions special options for this navigation operation
      * @param navigatorExtras extras to pass to the Navigator
      *
-     * @throws IllegalStateException if there is no current navigation node
+     * @throws IllegalStateException if navigation graph has not been set for this NavController
      * @throws IllegalArgumentException if the desired destination cannot be found from the
      *                                  current destination
      */
@@ -1622,7 +1622,10 @@ public open class NavController(
                 _graph
             else
                 backQueue.last().destination
-            ) ?: throw IllegalStateException("no current navigation node")
+            ) ?: throw IllegalStateException(
+                "No current destination found. Ensure a navigation graph has been set for " +
+                    "NavController $this."
+            )
 
         @IdRes
         var destId = resId