wayland: Set the libdecor frame visibility before mapping

Mapping the frame will commit the surface state, which will commit the subsurface tree and geometry. Map after setting the initial frame visibility to avoid setting geometry and subsurfaces, which may immediately change.

Author: Kontrabant

src/video/wayland/SDL_waylandwindow.c

@@ -1892,11 +1892,8 @@ void Wayland_ShowWindow(SDL_VideoDevice *_this, SDL_Window *window)
             SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Failed to create libdecor frame!");
         } else {
             libdecor_frame_set_app_id(data->shell_surface.libdecor.frame, data->app_id);
+            libdecor_frame_set_visibility(data->shell_surface.libdecor.frame, !(window->flags & SDL_WINDOW_BORDERLESS));
             libdecor_frame_map(data->shell_surface.libdecor.frame);
-            if (window->flags & SDL_WINDOW_BORDERLESS) {
-                // Note: Calling this with 'true' immediately after mapping will cause the libdecor Cairo plugin to crash.
-                libdecor_frame_set_visibility(data->shell_surface.libdecor.frame, false);
-            }
 
             if (c->zxdg_exporter_v2) {
                 data->exported = zxdg_exporter_v2_export_toplevel(c->zxdg_exporter_v2, data->surface);