e_grabinput: do not pass a faulty time

Authored by bu5hm4n.


e_grabinput: do not pass a faulty time

currently there is ecore_x_current_time passed, which is the time of the
last event. if this is passed to ecore_x_window_focus_at_time the request can be
ignored because the last event can be in the past. Instead using
ecore_x_window_focus fixes this, because current time is passed, which
means that x is just using this event at the time it is called.

@fix T2948

Test Plan: Try to run spotify and try to trigger the bug, I cannot anymore.

Reviewers: zmike, raster

Subscribers: raster, abyomi0, cedric, billiob

Maniphest Tasks: T2948

Differential Revision: https://phab.enlightenment.org/D3471