Fix this remapping in inner class constructors

Inner class constructors should use the argument instead of reading
outer `this` from a field because if such an access happens before a
delegating constructor call, e.g. when evaluating an argument, a JVM
bytecode validation error will be thrown. (The only operation on `this`
allowed before a delegating constructor call is SETFIELD, and only if
the field in question is declared in the same class.)

compiler/testData/codegen/box/closures/captureInSuperConstructorCall/outerCapturedInNestedObject.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JVM_IR
 interface Callback {
     fun invoke(): String
 }
@@ -19,4 +18,4 @@ class Outer {
 }
 
 fun box(): String =
-        Outer().Inner().callback.invoke()
+        Outer().Inner().callback.invoke()