Fix, redirect scheme on desktop has to be the full URL not just http

lib/models/auth/oauth_credentials.dart

@@ -35,10 +35,11 @@ class OAuthCredentials implements ICredentials {
   });
 
   factory OAuthCredentials.bootstrap(String serverName) {
-    final redirectScheme =
-        Platform.isWindows || Platform.isLinux ? 'http' : 'relatica';
+    final redirectScheme = Platform.isWindows || Platform.isLinux
+        ? 'http://localhost:43824'
+        : 'relatica';
     final redirectUrl = Platform.isWindows || Platform.isLinux
-        ? '$redirectScheme://localhost:43824'
+        ? redirectScheme
         : '$redirectScheme://authorize';
     return OAuthCredentials(
       clientId: '',