[IR BE] Remap dispatch receiver for inner ctor too

- do not forget to add into mapping dispatch receiver
 - fix KT-40686 (at least part of it)
 - add test

compiler/testData/codegen/box/innerNested/innerWithDefaultInner.kt

@@ -0,0 +1,24 @@
+
+// KT-40686
+
+
+class Outer(val o: String, val oo: String) {
+    inner class InnerArg(val i: String) {
+        val result: String get() = o + i
+    }
+
+    inner class InnerParam(val i: InnerArg = InnerArg("B")) {
+        fun foo() = i.result + oo
+    }
+}
+
+
+fun box(): String {
+    val o = Outer("A", "C")
+    val i = o.InnerParam()
+
+    val rr = i.foo()
+    if (rr != "ABC") return "FAIL: $rr"
+
+    return "OK"
+}