SIENTIAPDE-1646

Enhance MLFlow run ID resolution with error handling for missing and invalid source URIs

- Added checks in `get_model_run_id` method to raise exceptions for models with missing or invalid source URIs.
- Introduced new test cases to validate error handling for these scenarios.
- Updated `requirements-light.txt` to include `mlflow` as a dependency.

requirements-light.txt

@@ -4,6 +4,7 @@ sqlalchemy
 asyncua==1.0.6
 redis
 sientia_do>=1.12.1
+mlflow
 prometheus-client
 botocore
 boto3