langchain

bf839676 - [Community]: FIxed the DocumentDBVectorSearch `_similarity_search_without_score` (#22970)

[Community]: FIxed the DocumentDBVectorSearch `_similarity_search_without_score` (#22970) - **Description:** The PR #22777 introduced a bug in `_similarity_search_without_score` which was raising the `OperationFailure` error. The mistake was syntax error for MongoDB pipeline which has been corrected now. - **Issue:** #22770