[K/JS] Rework main function call to support it in per-file

js/js.translator/testData/box/esModules/main/suspendMainNoArgs.kt

@@ -0,0 +1,25 @@
+// EXPECTED_REACHABLE_NODES: 1296
+// ES_MODULES
+// CALL_MAIN
+
+import kotlin.coroutines.*
+
+var ok: String = "fail"
+
+var callback: () -> Unit = {}
+
+suspend fun main() {
+    suspendCoroutine<Unit> { cont ->
+        callback = {
+            cont.resume(Unit)
+        }
+    }
+
+    ok = "OK"
+}
+
+fun box(): String {
+    if ("fail" != ok) error("Fail")
+    callback()
+    return ok
+}