Minor, tests: Move EXPECTED_ERROR directives to the file end (to preserve stable line numbers)

plugins/kapt3/kapt3-compiler/testData/converter/nestedClassesNonRootPackage.kt

@@ -1,5 +1,3 @@
-// EXPECTED_ERROR class J$B is public, should be declared in a file named J$B.java
-
 // FILE: test/JavaClass.java
 package test;
 
@@ -83,4 +81,6 @@ class `A$B` {
 class Test1(val zoo: Foo.Bar.Zoo) : Foo.Bar(), IFoo.IBar, IFoo.IBar.IZoo {
     fun a(): Thread.State = Thread.State.NEW
     fun b(foo: JavaClass.Foo, bar: JavaClass.Foo.Bar) {}
-}
+}
+
+// EXPECTED_ERROR class J$B is public, should be declared in a file named J$B.java