fix: escape double quotation marks in the vector DB search query (#6506)

api/services/hit_testing_service.py

@@ -40,7 +40,7 @@ class HitTestingService:
 
         all_documents = RetrievalService.retrieve(retrival_method=retrieval_model['search_method'],
                                                   dataset_id=dataset.id,
-                                                  query=query,
+                                                  query=cls.escape_query_for_search(query),
                                                   top_k=retrieval_model['top_k'],
                                                   score_threshold=retrieval_model['score_threshold']
                                                   if retrieval_model['score_threshold_enabled'] else None,
@@ -104,3 +104,7 @@ class HitTestingService:
 
         if not query or len(query) > 250:
             raise ValueError('Query is required and cannot exceed 250 characters')
+
+    @staticmethod
+    def escape_query_for_search(query: str) -> str:
+        return query.replace('"', '\\"')