Ignore empty gateway auth required setting

Author: anth-volk

.github/scripts/modal-run-integ-tests.sh

@@ -102,7 +102,10 @@ cd projects/policyengine-apis-integ
 uv sync --extra test
 
 export simulation_integ_test_base_url="$BASE_URL"
-export simulation_integ_test_gateway_auth_required="${GATEWAY_AUTH_REQUIRED:-}"
+
+if [ -n "${GATEWAY_AUTH_REQUIRED:-}" ]; then
+  export simulation_integ_test_gateway_auth_required="$GATEWAY_AUTH_REQUIRED"
+fi
 
 if [ -n "$ACCESS_TOKEN" ]; then
   export simulation_integ_test_access_token="$ACCESS_TOKEN"

projects/policyengine-apis-integ/tests/simulation/conftest.py

@@ -13,7 +13,10 @@ class Settings(BaseSettings):
     poll_interval_seconds: float = 5.0
     us_model_version: str = "1.562.3"
 
-    model_config = SettingsConfigDict(env_prefix="simulation_integ_test_")
+    model_config = SettingsConfigDict(
+        env_prefix="simulation_integ_test_",
+        env_ignore_empty=True,
+    )
 
 
 settings = Settings()