KT-4204 ConstraintSystem erased after resolution completion

#KT-4204 Fixed

compiler/testData/diagnostics/tests/resolve/invoke/kt4204-completeNestedCallsForInvoke.kt

@@ -0,0 +1,24 @@
+//KT-4204 ConstraintSystem erased after resolution completion
+package c
+
+public abstract class TestBug1() {
+
+    public fun m3(<!UNUSED_PARAMETER!>position<!>: Int) {
+        position(m1().second<!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>)
+    }
+
+    public fun m4(position: (Int)->Int) {
+        position(m1().second)
+    }
+
+    private abstract fun m1(): Pair<Int, Int>
+
+    private fun position(<!UNUSED_PARAMETER!>p<!>: Int) {}
+
+}
+
+//from library
+public class Pair<out A, out B> (
+        public val first: A,
+        public val second: B
+)