Fixed: User gets stuck in Desktop Updating page when error occurs (#1055)

When installation of requirements error out (it did on Windows with
access denied error when installing new dependencies), don't have the
user get stuck in the `desktop-update` page.

Currently user will wait in the Desktop update spinner forever.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-1055-Draft-Show-maintenance-page-when-1b46d73d365081d6a088c96f741fd026)
by [Unito](https://www.unito.io)

Author: robinjhuang

src/install/installationManager.ts

@@ -285,9 +285,14 @@ export class InstallationManager implements HasTelemetry {
       onStdout: sendLogIpc,
       onStderr: sendLogIpc,
     };
-    await installation.virtualEnvironment.installComfyUIRequirements(callbacks);
-    await installation.virtualEnvironment.installComfyUIManagerRequirements(callbacks);
-    await installation.validate();
+    try {
+      await installation.virtualEnvironment.installComfyUIRequirements(callbacks);
+      await installation.virtualEnvironment.installComfyUIManagerRequirements(callbacks);
+      await installation.validate();
+    } catch (error) {
+      log.error('Error auto-updating packages:', error);
+      await this.appWindow.loadPage('server-start');
+    }
   }
 
   static setReinstallHandler(installation: ComfyInstallation) {