fix: 修改 wm_set_current_monitor 函数实现避免光标乱跳

- 将 wm_set_current_monitor 改为支持 restore_cursor 参数，按场景决定是
  否恢复光标位置
- 仅在指针位于当前显示器时更新 cursor_position 缓存，减少错误覆盖

src/event.c

@@ -34,7 +34,7 @@ static void button_press(xcb_button_press_event_t *ev) {
 
   if (!monitor) return;
 
-  wm_set_current_monitor(monitor);
+  wm_set_current_monitor(monitor, false);
   if (ev->event_x >= monitor->tag_extent.start &&
       ev->event_x <= monitor->tag_extent.end) {
     click_area = click_tag;
@@ -188,7 +188,7 @@ static void client_message(xcb_client_message_event_t *ev) {
 
       switch (ev->data.data32[0]) {
         case 2: /* 来自 pager */
-          wm_set_current_monitor(c->monitor);
+          wm_set_current_monitor(c->monitor, true);
           monitor_select_tag(c->monitor, t->mask);
           client_focus(c);
           break;