gtk4: Chat area cursor update
Make cursor to update when it's over a link on gtk4-client chat area.
Current code (derived from gtk3.22-client) tries to do that using "motion-notify-event" signal, which does not exist in gtk4.
Make cursor to update when it's over a link on gtk4-client chat area.
Current code (derived from gtk3.22-client) tries to do that using "motion-notify-event" signal, which does not exist in gtk4.