fix new callback graph layout test for small CI screen

Author: alexcjohnson

tests/integration/devtools/test_devtools_ui.py

@@ -110,13 +110,12 @@ def test_dvui003_callback_graph(dash_duo):
 
     # hide and redraw the callback graph so we get the new position
     dash_duo.find_element(".dash-debug-menu__button--callbacks").click()
-    dash_duo.find_element(".dash-debug-menu__button--callbacks").click()
-    sleep(2)
 
-    # fire callbacks so the callback graph redraws again
+    # fire callbacks so the profile state is regenerated
     dash_duo.find_element("#add").click()
+    dash_duo.find_element(".dash-debug-menu__button--callbacks").click()
     dash_duo.wait_for_text_to_equal("#totals", "0 of 1 items completed - 0%")
-    sleep(1)
+    sleep(2)
     # the manually moved node is still in its new position
     assert pos == dash_duo.driver.execute_script(
         """