gedit doesn't register enough frames in CI

[Saviq]

The numbers are: ci(xvfb) native(local) xvfb(local)

	confined-shell	mir_demo_server	mir-kiosk	ubuntu-frame
test_active_app[*-asciinema]	23 27 29	22 22 24	28 35 35	20 23 26
test_active_app[*-mir-kiosk-neverputt]	76 591 705	124 1869 989	99 2359 938	91 1203 805
test_compositor_alone[*]	9 6 6	2 2 2	10 10 10	2 3 3
test_inactive_app[*-gedit]	6 46 51	2 40 58	10 46 47	2 22 22
test_inactive_app[*-mir-kiosk-kodi]	19 163 89	17 181 94	25 164 94	14 154 84
test_inactive_app[*-qterminal]	10 13 13	5 7 8	12 19 17	5 10 9

So the gedit case looks weirdest.

Originally posted by @Saviq in https://github.com/MirServer/mir-ci/issues/19#issuecomment-1505056196

[wmww]

Oh, is this doing the thing where gedit takes 30 seconds to come up because the d-bus thingy isn't set?

[Saviq]

Fixed by #35