Uast: KotlinSecondaryConstructorWithInitializersUMethod introduced as workaround for KT-21617

to be the only constructor which includes `init` block when there is no primary constructors in the class

plugins/uast-kotlin/testData/Constructors.kt

@@ -58,8 +58,6 @@ class AWithSecondaryInit {
     lateinit var a: String
 
     init {
-        // This body will not be picked by UAST because no lightMethod contains it.
-        // Of course it is not a desired behaviour, so fix it if you know how
         println()
     }
 

plugins/uast-kotlin/testData/Constructors.log.txt

@@ -130,6 +130,10 @@ UFile (package = )
                 UCallExpression (kind = UastCallKind(name='constructor_call'), argCount = 0))
                     UIdentifier (Identifier ())
                     USimpleNameReferenceExpression (identifier = <init>)
+                UBlockExpression
+                    UCallExpression (kind = UastCallKind(name='method_call'), argCount = 0))
+                        UIdentifier (Identifier (println))
+                        USimpleNameReferenceExpression (identifier = println)
                 UBinaryExpression (operator = =)
                     USimpleNameReferenceExpression (identifier = a)
                     UQualifiedReferenceExpression

plugins/uast-kotlin/testData/Constructors.render.txt

@@ -67,6 +67,9 @@ public final class AWithSecondaryInit {
     public final fun setA(p: java.lang.String) : void = UastEmptyExpression
     public fun AWithSecondaryInit(i: int) {
         <init>()
+        {
+            println()
+        }
         a = i.toString()
     }
     public fun AWithSecondaryInit(s: java.lang.String) {