Render receivers as 'this@owner: type'

Add test for generic inner class with generic outer class.

compiler/testData/ir/irText/expressions/arrayAugmentedAssignment1.txt

@@ -12,7 +12,7 @@ FILE /arrayAugmentedAssignment1.kt
       RETURN type=kotlin.Nothing from='bar(): Int'
         CONST Int type=kotlin.Int value='42'
   CLASS CLASS C
-    $new: VALUE_PARAMETER <receiver: C>
+    $new: VALUE_PARAMETER this@C: C
     CONSTRUCTOR public constructor C(x: kotlin.IntArray)
       VALUE_PARAMETER value-parameter x: kotlin.IntArray
       BLOCK_BODY
@@ -23,11 +23,11 @@ FILE /arrayAugmentedAssignment1.kt
         EXPRESSION_BODY
           GET_VAR 'value-parameter x: IntArray' type=kotlin.IntArray origin=INITIALIZE_PROPERTY_FROM_PARAMETER
       FUN DEFAULT_PROPERTY_ACCESSOR public final fun <get-x>(): kotlin.IntArray
-        $this: VALUE_PARAMETER <receiver: C>
+        $this: VALUE_PARAMETER this@C: C
         BLOCK_BODY
           RETURN type=kotlin.Nothing from='<get-x>(): IntArray'
             GET_FIELD 'x: IntArray' type=kotlin.IntArray origin=null
-              receiver: GET_VAR '<receiver: C>' type=C origin=null
+              receiver: GET_VAR 'this@C: C' type=C origin=null
     FUN FAKE_OVERRIDE public open override fun equals(other: kotlin.Any?): kotlin.Boolean
     FUN FAKE_OVERRIDE public open override fun hashCode(): kotlin.Int
     FUN FAKE_OVERRIDE public open override fun toString(): kotlin.String