Fix check for restricting invoking ecs tests directly (#99435)

x-pack/plugin/stack/build.gradle

@@ -23,10 +23,10 @@ dependencies {
 }
 
 // These tests are only invoked direclty as part of a dedicated build job
-tasks.named('javaRestTest').configure {
+tasks.named('javaRestTest').configure {task ->
     onlyIf("E2E test task must be invoked directly") {
-      gradle.startParameter.getTaskNames().contains(this.path) ||
-        (gradle.startParameter.getTaskNames().contains(this.name) && gradle.startParameter.currentDir == project.projectDir)
+      gradle.startParameter.getTaskNames().contains(task.path) ||
+        (gradle.startParameter.getTaskNames().contains(task.name) && gradle.startParameter.currentDir == project.projectDir)
     }
 }