Misc: Select does not scroll

* Forced scrolling on selection

Note: Fix for the CI fail: https://ci.xwiki.org/job/XWiki/job/xwiki-platform/job/master/6982/testReport/junit/org.xwiki.test.ui/SkinxTest/Platform_Builds___main___distribution___flavor_test_ui___Build_for_Flavor_Test___UI___testJavascriptExtension/
(cherry picked from commit 8f66f4e1)

xwiki-platform-core/xwiki-platform-test/xwiki-platform-test-ui/src/main/java/org/xwiki/test/ui/po/FormContainerElement.java

@@ -174,7 +174,9 @@ public String getFormAction()
 
     public SelectElement getSelectElement(By by)
     {
-        return this.new SelectElement(getFormElement().findElement(by));
+        WebElement element = getFormElement().findElement(by);
+        getDriver().scrollTo(element);
+        return this.new SelectElement(element);
     }
 
     public class SelectElement extends BaseElement