KT-24750 Blank line after class header formatter should use user setting

idea/testData/formatter/BlankLinesAfterClassHeader.kt

@@ -8,15 +8,30 @@ object Bar {
     }
 }
 
+object BarS { fun xyzzy() {} }
+
 val f = object {
     fun foo() {}
 }
 
+class FooCO {
+    fun bar() {
+    }
+
+    companion object {
+        fun foo() {}
+    }
+}
+
 class FooM
     : IFoo {
     fun bar()
 }
 
+class FooN : IFoo {
+    fun bar()
+}
+
 class FooC(
         val x: String
 ) {