refactor(StatesToWalkStepMapper): Reuse hasProfileCost check.

src/main/java/org/opentripplanner/routing/algorithm/mapping/StatesToWalkStepsMapper.java

@@ -200,10 +200,7 @@ private void processState(State backState, State forwardState) {
 
       // G-MAP-specific: Overwrite the name on short street edges so they are merged with longer street
       // sections to clean up turn-by-turn instructions.
-      if (
-        edge instanceof StreetEdge streetEdge &&
-        streetEdge.profileCost != null && !streetEdge.profileCost.isEmpty()
-      ) {
+      if (edge instanceof StreetEdge streetEdge && streetEdge.hasProfileCost()) {
         if (shouldOverwriteCurrentDirectionText(edge, direction)) {
           // HACK: If the instruction is "continue", the current street name is bogus and its length is very short (< 10 meters)
           // but not the next edge one, use the next street name and don't start a new step.