fix: win, multi-display settings changed (#8531)

1. Windows, multi-display, as the controlled side.
2. Connect
3. Turn on privacy mode, with mode 2.
4. Turn off privacy mode.

Then the display settings are continues changed when connect &
disconnect.

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

src/privacy_mode/win_virtual_display.rs

@@ -154,6 +154,8 @@ impl PrivacyModeImpl {
         Self::restore_displays(&self.virtual_displays);
         allow_err!(Self::commit_change_display(0));
         self.restore_plug_out_monitor();
+        self.displays.clear();
+        self.virtual_displays.clear();
     }
 
     fn restore_plug_out_monitor(&mut self) {