Put 'thisReceiver' declaration in class

Interfaces also have 'thisReceiver'

compiler/testData/ir/irText/classes/objectWithInitializers.txt

@@ -1,6 +1,6 @@
 FILE /objectWithInitializers.kt
   CLASS CLASS Base
-    $new: VALUE_PARAMETER this@Base: Base
+    $this: VALUE_PARAMETER this@Base: Base
     CONSTRUCTOR public constructor Base()
       BLOCK_BODY
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
@@ -9,7 +9,7 @@ FILE /objectWithInitializers.kt
     FUN FAKE_OVERRIDE public open override fun hashCode(): kotlin.Int
     FUN FAKE_OVERRIDE public open override fun toString(): kotlin.String
   CLASS OBJECT Test
-    $new: VALUE_PARAMETER this@Test: Test
+    $this: VALUE_PARAMETER this@Test: Test
     CONSTRUCTOR private constructor Test()
       BLOCK_BODY
         DELEGATING_CONSTRUCTOR_CALL 'constructor Base()'