Add test for SAM-converted lambdas passed to Obj-C

Based on https://youtrack.jetbrains.com/issue/KT-44799

kotlin-native/backend.native/tests/objcexport/funInterfaces.swift

@@ -0,0 +1,15 @@
+import Kt
+
+// Based on https://youtrack.jetbrains.com/issue/KT-44799.
+private func testSAMConversion() throws {
+    try assertEquals(actual: FunInterfacesKt.getObject().run(), expected: 1)
+    try assertEquals(actual: FunInterfacesKt.getLambda().run(), expected: 2)
+}
+
+class FunInterfacesTests : SimpleTestProvider {
+    override init() {
+        super.init()
+
+        test("TestSAMConversion", testSAMConversion)
+    }
+}