Fix references from test to main in Gradle JS plugin with default output file

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/Kotlin2JsGradlePluginIT.kt

@@ -72,6 +72,7 @@ class Kotlin2JsGradlePluginIT : BaseGradleIT() {
         project.build("build") {
             assertSuccessful()
             assertFileExists("build/classes/main/kotlin2JsNoOutputFileProject_main.js")
+            assertFileExists("build/classes/test/kotlin2JsNoOutputFileProject_test.js")
         }
     }
 

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/kotlin2JsNoOutputFileProject/src/main/kotlin/example/Dummy.kt

@@ -1,4 +1,6 @@
 package example
 
-class Dummy {}
+class Dummy {
+    fun f() {}
+}
 

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/kotlin2JsNoOutputFileProject/src/test/kotlin/example/DummyTest.kt

@@ -0,0 +1,8 @@
+package example
+
+class DummyTest {
+    fun test() {
+        Dummy().f()
+    }
+}
+