FIC: propagate info about conversions for deserialized classes

compiler/testData/compileKotlinAgainstKotlin/useDeserializedFunInterface.kt

@@ -0,0 +1,29 @@
+// !LANGUAGE: +NewInference +FunctionInterfaceConversion +SamConversionPerArgument +SamConversionForKotlinFunctions
+
+// FILE: A.kt
+
+fun interface KRunnable {
+    fun invoke(): String
+}
+
+fun inA(k: KRunnable): String = k.invoke()
+
+// FILE: B.kt
+
+fun inB(k: KRunnable): String = k.invoke()
+
+fun box(): String {
+    val first = inA(KRunnable { "O" }) + inB(KRunnable { "K" })
+    if (first != "OK") return "fail1: $first"
+
+    val second = inA { "O" } + inB { "K" }
+    if (second != "OK") return "fail2: $second"
+
+    val f1: () -> String = { "O" }
+    val f2: () -> String = { "K" }
+
+    val third = inA(f1) + inB(f2)
+    if (third != "OK") return "fail3: $third"
+
+    return "OK"
+}