osc: ensure tick after any mouse-event

Previously tick() was ensured unconditionally only after mouse-move,
but there are other mouse-events which need re-rendering (tick), like
mouse-down (icons may get grayed-out) or mouse-up (icons may change).

For instance: mpv --pause --myclip.mkv

then move the mouse over the volume/mute OSC button, then - without
moving the mouse - press and release the left mouse button.

The osc was not re-rendered because it's paused and the mouse didn't
move, so the volume icon didn't get grayed-out when held down, and the
icon doesn't change on mouse-up (to reflect the new mute state).

Now both these changes are rendered correctly.

0 files changed, 0 insertions, 0 deletions