Use separate constraint position during call substitution as part of inferring postponed type variables

^KT-47052 Fixed
^KT-47082 Fixed

compiler/testData/codegen/box/inference/builderInference/kt47052.kt

@@ -0,0 +1,12 @@
+// DONT_TARGET_EXACT_BACKEND: WASM
+// WITH_RUNTIME
+
+public inline fun <R, C : MutableCollection<in R>> flatMapTo1(destination: C, transform: (List<String>) -> Iterable<R>) {}
+
+@OptIn(ExperimentalStdlibApi::class)
+fun box(): String {
+    buildSet { // NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER is reported
+        flatMapTo1(this) { it }
+    }
+    return "OK"
+}