Fix empty window after switching in some cases

[zihadmahiuddin]

Purpose of this Pull Request

In some cases, Ribir wouldn't redraw the window even when a redraw event would be emitted.
For example, on my i3 setup if I go to another workspace and come back, the app wouldn't redraw and the window would stay blank.

Here is a video:

2025-02-06.13-09-43.mp4

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I think changing Window::draw_frame's signature might count as breaking, let me know if it is, I'll edit the change log to reflect that.

[M-Adoo]

Thanks!