SIENTIAPDE-1579: Fix SientiaMlException propagation in ModelServing.search_runs_by_name to correctly raise the exception with its message, resolving a TypeError. Enhance training test script to support scenario-specific CSV files for different test cases. Update search_runs_by_name return type hint and apply minor code formatting.

model_manager/sientia/models.py

@@ -35,9 +35,7 @@ def validate_frontend_date_format(fmt: str | None) -> None:
         return
     if fmt not in ALLOWED_FRONTEND_DATE_FORMATS:
         allowed = ', '.join(sorted(ALLOWED_FRONTEND_DATE_FORMATS))
-        raise ValueError(
-            f'Invalid date_format "{fmt}". Allowed formats: {allowed}'
-        )
+        raise ValueError(f'Invalid date_format "{fmt}". Allowed formats: {allowed}')
 
 
 def _frontend_date_format_to_strftime(fmt: str | None) -> str | None: