Adding an if condition

Author: mansisampat

packages/auth/src/core/auth/auth_impl.ts

@@ -491,7 +491,9 @@ export class AuthImpl implements AuthInternal, _FirebaseService {
     }
 
     // Clear Firebase token for Regional Auth Instance when signOut is called
-    await this._updateFirebaseToken(null);
+    if (this.tenantConfig) {
+      await this._updateFirebaseToken(null);
+    }
     // Prevent callbacks from being called again in _updateCurrentUser, as
     // they were already called in the first line.
     return this._updateCurrentUser(null, /* skipBeforeStateCallbacks */ true);