IR: copy anonymous initializer annotations properly #KT-48687 Fixed

compiler/testData/ir/irText/declarations/annotations/annotationOnClassWithInitializer.kt.txt

@@ -0,0 +1,19 @@
+annotation class SomeAnn : Annotation {
+  constructor() /* primary */
+
+}
+
+@SomeAnn
+class My {
+  constructor() /* primary */ {
+    super/*Any*/()
+    /* <init>() */
+
+  }
+
+  @SomeAnn
+  init {
+    val x: Int = 1
+  }
+
+}