Fix bug in abstract benchmark class (light tree)

compiler/fir/lightTree/tests/org/jetbrains/kotlin/fir/lightTree/benchmark/AbstractBenchmark.kt

@@ -31,9 +31,9 @@ abstract class AbstractBenchmark {
             files[file] = text
         }
         if (ignoreTestData) {
-            path.walkTopDownWithTestData(saveText)
-        } else {
             path.walkTopDown(saveText)
+        } else {
+            path.walkTopDownWithTestData(saveText)
         }
     }