Put 'thisReceiver' declaration in class

Interfaces also have 'thisReceiver'

compiler/testData/ir/irText/singletons/enumEntry.txt

@@ -1,6 +1,6 @@
 FILE /enumEntry.kt
   CLASS ENUM_CLASS Z
-    $new: VALUE_PARAMETER this@Z: Z
+    $this: VALUE_PARAMETER this@Z: Z
     CONSTRUCTOR private constructor Z()
       BLOCK_BODY
         ENUM_CONSTRUCTOR_CALL 'constructor Enum(String, Int)'
@@ -8,7 +8,7 @@ FILE /enumEntry.kt
     ENUM_ENTRY enum entry ENTRY
       init: ENUM_CONSTRUCTOR_CALL 'constructor ENTRY()'
       class: CLASS ENUM_ENTRY ENTRY
-        $new: VALUE_PARAMETER this@ENTRY: ENTRY
+        $this: VALUE_PARAMETER this@ENTRY: ENTRY
         CONSTRUCTOR private constructor ENTRY()
           BLOCK_BODY
             ENUM_CONSTRUCTOR_CALL 'constructor Z()'
@@ -17,7 +17,7 @@ FILE /enumEntry.kt
           $this: VALUE_PARAMETER this@ENTRY: ENTRY
           BLOCK_BODY
         CLASS CLASS A
-          $new: VALUE_PARAMETER this@A: A
+          $this: VALUE_PARAMETER this@A: A
           CONSTRUCTOR public constructor A()
             BLOCK_BODY
               DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'