Make close_async call standard close with EyesSelenium

Author: eirenik0

eyes_selenium/applitools/selenium/eyes.py

@@ -229,7 +229,9 @@ def close(self, raise_ex=True):
 
     def close_async(self):
         if self._is_visual_grid_eyes:
-            self._current_eyes.close_async()
+            self._visual_grid_eyes.close_async()
+        else:
+            self._selenium_eyes.close(False)
 
     def _init_driver(self, driver):
         # type: (AnyWebDriver) -> None