fix: win, virtual display (#9023)

1. Default resolution 1920x1080.
2. Restore on conn & disconn.

Signed-off-by: fufesou <linlong1266@gmail.com>

src/server/connection.rs

@@ -2670,7 +2670,7 @@ impl Connection {
                 }
             }
         } else {
-            if let Err(e) = virtual_display_manager::plug_out_monitor(t.display) {
+            if let Err(e) = virtual_display_manager::plug_out_monitor(t.display, false) {
                 log::error!("Failed to plug out virtual display {}: {}", t.display, e);
                 self.send(make_msg(format!(
                     "Failed to plug out virtual displays: {}",

src/server/display_service.rs

@@ -433,7 +433,6 @@ pub fn try_get_displays_(add_amyuni_headless: bool) -> ResultType<Vec<Display>>
     // }
 
     let no_displays_v = no_displays(&displays);
-    virtual_display_manager::set_can_plug_out_all(!no_displays_v);
     if no_displays_v {
         log::debug!("no displays, create virtual display");
         if let Err(e) = virtual_display_manager::plug_in_headless() {