don't try to move outputs when its x,y hasn't change

when using wlr_output_layout_move() wlroots internally
change the state of the output to manually configured and
when updating the layout these outputs aren't ignored by
wlroots, leaving us at our own

dwl.c

@@ -1607,6 +1607,7 @@ outputmgrapplyortest(struct wlr_output_configuration_v1 *config, int test)
 	/* Then enable outputs that need to */
 	wl_list_for_each(config_head, &config->heads, link) {
 		struct wlr_output *wlr_output = config_head->state.output;
+		Monitor *m = wlr_output->data;
 		if (!config_head->state.enabled)
 			continue;
 
@@ -1619,8 +1620,11 @@ outputmgrapplyortest(struct wlr_output_configuration_v1 *config, int test)
 					config_head->state.custom_mode.height,
 					config_head->state.custom_mode.refresh);
 
-		wlr_output_layout_move(output_layout, wlr_output,
+		/* Don't move monitors if position wouldn't change, this to avoid
-				config_head->state.x, config_head->state.y);
+		 * wlroots marking the output as manually configured */
+		if (m->m.x != config_head->state.x || m->m.y != config_head->state.y)
+			wlr_output_layout_move(output_layout, wlr_output,
+					config_head->state.x, config_head->state.y);
 		wlr_output_set_transform(wlr_output, config_head->state.transform);
 		wlr_output_set_scale(wlr_output, config_head->state.scale);