[JS IR] Add test on call of suspend super type

compiler/testData/codegen/box/coroutines/suspendFunctionAsSupertypeCall.kt

@@ -0,0 +1,48 @@
+// WITH_RUNTIME
+// !LANGUAGE: +SuspendFunctionAsSupertype
+
+import kotlin.coroutines.*
+
+var failure: String? = "FAIL ILLEGAL STATE"
+
+class SuspendNoneUnit: suspend () -> Unit {
+    override suspend fun invoke() {
+        failure = null
+    }
+}
+
+class SuspendIntString: suspend (Int) -> String {
+    override suspend fun invoke(p: Int): String {
+        failure = if (p == 7) null else "FAIL CONDITION"
+        return "OK"
+    }
+}
+
+fun suspendNoneUnit(): String? {
+    failure = "FAIL INHERITED 2"
+    val a = suspend {
+        val snu = SuspendNoneUnit()
+        snu()
+    }
+    a.startCoroutine(Continuation(EmptyCoroutineContext) { it.getOrThrow() })
+    return failure
+}
+
+fun suspendIntString(): String? {
+    failure = "FAIL INHERITED 3"
+    val a = suspend {
+        val sis = SuspendIntString()
+        sis(7)
+    }
+    a.startCoroutine(Continuation(EmptyCoroutineContext) { it.getOrThrow() })
+    return failure
+}
+
+fun box(): String {
+    val failures = listOfNotNull(
+        suspendNoneUnit(),
+        suspendIntString()
+    )
+
+    return if (failures.isNotEmpty()) failures.joinToString("\n") else "OK"
+}