Fix Browser-error in web-app

In the web-app, we don't open another browser-window which needs to be closed at the end. This results in an error in the browser-log: "No active window to close" if the CapacitorBrowser is used => need the DefaultBrowser for it.

demos/angular-capacitor/src/app/core/core.module.ts

@@ -24,7 +24,8 @@ import { HttpClient } from '@angular/common/http';
     },
     {
       provide: Browser,
-      useClass: CapacitorBrowser
+      useFactory: (platform: Platform): Browser => platform.is("hybrid") ? new CapacitorBrowser() : new DefaultBrowser(),
+      deps: [Platform]
     },
     {
       provide: AuthService,