By convention, all robot tests need to be in a package under test.robot.* so that they are only run when the gradle -PUSE_ROBOT=true option is set. The system tests in `test.javafx.scene.control.behavior` use Robot, but are outside that package hierarchy. They need to be moved to `test.robot.javafx.scene.control.behavior`.

NOTE:
build.gradle expects all robot tests to be in test.robot.* package hierarchy
```
4023         if (!IS_USE_ROBOT) {
4024             // Disable all robot-based visual tests
4025             exclude("test/robot/**");
4026         }
```