fix(ui): the gear and socials drawers retract on an outside click

Reported 2026-11-05: those two tabs stayed open when clicking elsewhere, unlike Stream Settings, YPP
and TEST. All five drawers share one host (TextPullOutHost), but the window's click-outside guard only
listed the other three, so the gear and socials panels had no way to dismiss except their own tab.

The guard now closes them too, and a test pins both directions: an outside click retracts the drawer,
and a click inside it does not.

MainWindow.xaml.cs

@@ -201,6 +201,10 @@ public partial class MainWindow : Window
             if (form.IsDrawerOpen) form.CloseDrawerCommand.Execute(null);
             if (ypp.IsDrawerOpen) ypp.CloseDrawerCommand.Execute(null);
             if (test.IsDrawerOpen) test.CloseDrawerCommand.Execute(null);
+            // The Settings (gear) and Socials drawers live in the same host but were left out of this
+            // guard, so clicking anywhere else left them open (reported 2026-11-05).
+            _viewModel.CloseSettingsDrawerIfOpen();
+            _viewModel.CloseSocialsDrawer();
         }
         if (_previewPane.IsClickInsidePreview(original)) return;
         if (_leftPanel.IsClickInside(original)) return;