[java] Implement getDomAttribute method in EventFiringWebDriver (#9394)

Author: pujagani

java/client/src/org/openqa/selenium/support/events/EventFiringWebDriver.java

@@ -457,6 +457,11 @@ public String getAttribute(String name) {
       return element.getAttribute(name);
     }
 
+    @Override
+    public String getDomAttribute(String name) {
+      return element.getDomAttribute(name);
+    }
+
     @Override
     public boolean isSelected() {
       return element.isSelected();