VideoThread: Dispatch thread toggle failures safely

Run fatal reconfiguration handling through the active video execution context
so video-owned teardown and thread assertions execute on the correct thread.

src/core/video_thread.cpp

@@ -1128,8 +1128,9 @@ void VideoThread::SetThreadEnabled(bool enabled)
   if (!Reconfigure(requested_renderer, requested_renderer.has_value(), fullscreen_state, requested_fullscreen_ui, true,
                    &error))
   {
-    ERROR_LOG("Reconfigure failed: {}", error.GetDescription());
-    ReportFatalErrorAndShutdown(fmt::format("Reconfigure failed: {}", error.GetDescription()));
+    std::string message = fmt::format("Reconfigure failed: {}", error.GetDescription());
+    ERROR_LOG(message);
+    RunOnThreadAndSync([message = std::move(message)]() { ReportFatalErrorAndShutdown(message); });
   }
 }
 

src/duckstation-qt/mainwindow.cpp

@@ -800,7 +800,7 @@ void MainWindow::recreate()
     show();
 
   // We need to close input sources, because e.g. DInput uses our window handle.
-  Host::RunOnCoreThread(&InputManager::CloseSources, true);
+  Host::RunOnCoreThread(&InputManager::CloseSources);
 
   // Ensure we don't get a display widget creation sent to us.
   const bool was_display_created = hasDisplayWidget();