Append newline to EOF for .txt test data files

Reverts and fixes 102f0d3

compiler/testData/lazyResolve/recursiveComparator/AnnotationOnObject.txt

@@ -16,4 +16,4 @@ test.A(a = IntegerValueType(12): IntegerValueType(12), c = "Hello": kotlin.Strin
     public class object <class-object-for-SomeObject> : test.SomeObject {
         /*primary*/ private constructor <class-object-for-SomeObject>()
     }
-}
+}