NAVPOR-296: Fix maneuver inconsistency at Maneuver List (#10014)

* Add toString() methods
* Add comment to unclear method call
* Unify maneuver instruction generation for UI components
* Fix secondary modifier not being used
* Check for componentList emptiness

GitOrigin-RevId: 839cdcf8b4f05d0536de4ee2a9e5b9c7cb1614a5

Author: carstenhag

tripdata/src/main/java/com/mapbox/navigation/tripdata/maneuver/model/Maneuver.kt

@@ -59,4 +59,15 @@ class Maneuver internal constructor(
         laneGuidance: Lane? = this.laneGuidance,
         maneuverPoint: Point = this.maneuverPoint,
     ) = Maneuver(primary, stepDistance, secondary, sub, laneGuidance, maneuverPoint)
+
+    override fun toString(): String {
+        return "Maneuver(" +
+            "primary=$primary, " +
+            "stepDistance=$stepDistance, " +
+            "secondary=$secondary, " +
+            "sub=$sub, " +
+            "laneGuidance=$laneGuidance, " +
+            "maneuverPoint=$maneuverPoint" +
+            ")"
+    }
 }