[PSI2IR] Use candidate descriptor to get original type parameters while generating assignment receiver for property

^KT-46829 Fixed

compiler/testData/codegen/box/innerNested/kt46829.kt

@@ -0,0 +1,20 @@
+class Outer<T> {
+    var <V> Inner<T, V>.prop: V
+        get() = this.value
+        set(value) {
+            this.value = value
+        }
+}
+
+class Inner<T, V>(
+    val key: T,
+    var value: V
+)
+
+fun box(): String {
+    Outer<Boolean>().run {
+        val i = Inner(true, false)
+        i.prop = true
+    }
+    return "OK"
+}