Fix no-arg constructor generation for actual class

compiler/testData/codegen/box/multiplatform/noArgActualConstructor.kt

@@ -0,0 +1,31 @@
+// !LANGUAGE: +MultiPlatformProjects
+// TARGET_BACKEND: JVM
+// WITH_RUNTIME
+// FILE: common.kt
+
+expect class Foo(a: String = "", b: Int = 42)
+
+// FILE: J.java
+
+public class J {
+    public static void test() {
+        new Foo();
+        new Foo("", 42);
+    }
+}
+
+// FILE: jvm.kt
+
+import kotlin.test.assertEquals
+
+actual class Foo actual constructor(a: String, b: Int) {
+    init {
+        assertEquals("", a)
+        assertEquals(42, b)
+    }
+}
+
+fun box(): String {
+    J.test()
+    return "OK"
+}