[AIRFLOW-2654] Fix incorret URL on refresh in Graph View of FAB UI
[AIRFLOW-2654] Fix incorret URL on refresh in Graph View of FAB UI

- Fix incorrect URL requested on pressing the refresh button in the graph view.

(cherry picked from commit 8dc54e6e0034eec1511453e168499931348f684c)
Signed-off-by: Bolke de Bruin <17f52a69a3ba26c79c8a88ef8c1f26312d9cbf0e@xs4all.nl>

CloverHealth/airflow,owlabs/incubator-airflow,CloverHealth/airflow,owlabs/incubator-airflow,CloverHealth/airflow,owlabs/incubator-airflow,owlabs/incubator-airflow,CloverHealth/airflow