revert graphql_router since it's still using in getVersion

Signed-off-by: Huong Nguyen <[email protected]>

package/kedro_viz/api/apps.py

@@ -18,6 +18,7 @@
 from kedro_viz.api.rest.responses.utils import EnhancedORJSONResponse
 from kedro_viz.integrations.kedro import telemetry as kedro_telemetry
 
+from .graphql.router import router as graphql_router
 from .rest.router import router as rest_router
 
 _HTML_DIR = Path(__file__).parent.parent.absolute() / "html"
@@ -62,6 +63,7 @@ def create_api_app_from_project(
     """
     app = _create_base_api_app()
     app.include_router(rest_router)
+    app.include_router(graphql_router)
 
     # Check for html directory existence.
     if Path(_HTML_DIR).is_dir():