Add fallback to environment variables in loading test (#1961)

chore: Update loading test to include fallback to environment variables

tests/test_loading.py

@@ -1,5 +1,4 @@
 import pytest
-
 from langflow.graph import Graph
 from langflow.graph.schema import RunOutputs
 from langflow.initial_setup.setup import load_starter_projects
@@ -38,6 +37,6 @@ def test_run_flow_from_json_object():
     """Test loading a flow from a json file and applying tweaks"""
     _, projects = zip(*load_starter_projects())
     project = [project for project in projects if "Basic Prompting" in project["name"]][0]
-    results = run_flow_from_json(project, input_value="test")
+    results = run_flow_from_json(project, input_value="test", fallback_to_env_vars=True)
     assert results is not None
     assert all(isinstance(result, RunOutputs) for result in results)