JS: tests for KT-7357: extension functions from external KJS library couldn't be called in some cases

compiler/tests/org/jetbrains/kotlin/integration/AntTaskJsTest.java

@@ -122,6 +122,11 @@ public class AntTaskJsTest extends AntTaskBaseTest {
         doJsAntTest("jslib-example.js");
     }
 
+    @Test
+    public void simpleWithStdlibAndJsFileAsAnotherLib() throws Exception {
+        doJsAntTest("jslib-example.js");
+    }
+
     @Test
     public void simpleWithMainFQArgs() throws Exception {
         doJsAntTest();