Fix environment route guard service mock

Add the documentAnnotationService export to the route guard test's service mock so issueRoutes can be constructed after document annotation support.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

server/src/__tests__/environment-selection-route-guards.test.ts

@@ -90,6 +90,7 @@ vi.mock("../services/index.js", () => ({
     expireStaleRequestConfirmationsForIssueDocument: vi.fn(async () => []),
   }),
   documentService: () => ({}),
+  documentAnnotationService: () => ({}),
   routineService: () => ({}),
   workProductService: () => ({}),
 }));