fix(api): Add UnauthenticatedError to upload token error union

The RegenerateRepositoryUploadTokenError union was missing
UnauthenticatedError, causing a GraphQL runtime error when
unauthenticated requests hit the resolver. Add the missing type
to match the sibling RegenerateRepositoryTokenError union and
add a test for the unauthenticated case.

Co-Authored-By: Claude <noreply@anthropic.com>

Author: michelletran-sentry

apps/codecov-api/graphql_api/tests/mutation/test_regenerate_repository_upload_token.py

@@ -24,6 +24,16 @@ def setUp(self):
         self.repo = RepositoryFactory(author=self.org, name="gazebo", private=False)
         self.old_repo_token = self.repo.upload_token
 
+    def test_when_unauthenticated(self):
+        data = self.gql_request(
+            query,
+            variables={"input": {"repoName": "gazebo", "owner": "codecov"}},
+        )
+        assert (
+            data["regenerateRepositoryUploadToken"]["error"]["__typename"]
+            == "UnauthenticatedError"
+        )
+
     def test_when_unauthorized_user_not_part_of_org(self):
         random_user = OwnerFactory()
         data = self.gql_request(

apps/codecov-api/graphql_api/types/mutation/regenerate_repository_upload_token/regenerate_repository_upload_token.graphql

@@ -1,4 +1,4 @@
-union RegenerateRepositoryUploadTokenError = UnauthorizedError | ValidationError
+union RegenerateRepositoryUploadTokenError = UnauthenticatedError | UnauthorizedError | ValidationError
 
 type RegenerateRepositoryUploadTokenPayload {
   token: String