config: Force modeset before running deferred configs

Some commands require outputs to be enabled. These commands are deferred
to allow outputs to be discovered, but the delayed modeset might only
run some time later.

Force a modeset to occur before running deferred commands.

Fixes: https://github.com/swaywm/sway/issues/8433

sway/main.c

@@ -361,6 +361,7 @@ int main(int argc, char **argv) {
 	}
 
 	config->active = true;
+	force_modeset();
 	load_swaybars();
 	run_deferred_commands();
 	run_deferred_bindings();