[Gradle, JS] Fix test for IR browser distribution

^KT-41566 fixed

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

@@ -708,7 +708,7 @@ abstract class AbstractKotlin2JsGradlePluginIT(private val irBackend: Boolean) :
         build("clean", "browserDistribution") {
             assertTasksExecuted(
                 ":app:processResources",
-                ":app:browserDistributeResources"
+                if (irBackend) ":app:browserProductionExecutableDistributeResources" else ":app:browserDistributeResources"
             )
 
             assertFileExists("app/build/distributions/index.html")