langchain[patch]: Fix MongoDBAtlasVectorSearch reference in self query retriever (#22401)

**Description:** 
SelfQuery Retriever with MongoDBAtlasVectorSearch (from
langchain_mongodb import MongoDBAtlasVectorSearch) and
Chroma (from langchain_chroma import Chroma) is not supported.
The imports in the [builtin
translators](8cbce684d4/libs/langchain/langchain/retrievers/self_query/base.py (L73))
points to the
[deprecated](acaf214a45/libs/community/langchain_community/vectorstores/mongodb_atlas.py (L36))
vectorstore.

**Issue:** 
#22272

---------

Co-authored-by: Bagatur <baskaryan@gmail.com>
Co-authored-by: Bagatur <22008038+baskaryan@users.noreply.github.com>

libs/langchain/langchain/retrievers/self_query/base.py

@@ -64,13 +64,11 @@ def _get_builtin_translator(vectorstore: VectorStore) -> Visitor:
     from langchain_community.query_constructors.weaviate import WeaviateTranslator
     from langchain_community.vectorstores import (
         AstraDB,
-        Chroma,
         DashVector,
         DatabricksVectorSearch,
         DeepLake,
         Dingo,
         Milvus,
-        MongoDBAtlasVectorSearch,
         MyScale,
         OpenSearchVectorSearch,
         PGVector,
@@ -82,9 +80,15 @@ def _get_builtin_translator(vectorstore: VectorStore) -> Visitor:
         Vectara,
         Weaviate,
     )
+    from langchain_community.vectorstores import (
+        Chroma as CommunityChroma,
+    )
     from langchain_community.vectorstores import (
         ElasticsearchStore as ElasticsearchStoreCommunity,
     )
+    from langchain_community.vectorstores import (
+        MongoDBAtlasVectorSearch as CommunityMongoDBAtlasVectorSearch,
+    )
     from langchain_community.vectorstores import (
         Pinecone as CommunityPinecone,
     )
@@ -93,7 +97,7 @@ def _get_builtin_translator(vectorstore: VectorStore) -> Visitor:
         AstraDB: AstraDBTranslator,
         PGVector: PGVectorTranslator,
         CommunityPinecone: PineconeTranslator,
-        Chroma: ChromaTranslator,
+        CommunityChroma: ChromaTranslator,
         DashVector: DashvectorTranslator,
         Dingo: DingoDBTranslator,
         Weaviate: WeaviateTranslator,
@@ -106,7 +110,7 @@ def _get_builtin_translator(vectorstore: VectorStore) -> Visitor:
         SupabaseVectorStore: SupabaseVectorTranslator,
         TimescaleVector: TimescaleVectorTranslator,
         OpenSearchVectorSearch: OpenSearchTranslator,
-        MongoDBAtlasVectorSearch: MongoDBAtlasTranslator,
+        CommunityMongoDBAtlasVectorSearch: MongoDBAtlasTranslator,
     }
     if isinstance(vectorstore, DatabricksVectorSearch):
         return DatabricksVectorSearchTranslator()
@@ -148,6 +152,22 @@ def _get_builtin_translator(vectorstore: VectorStore) -> Visitor:
             if isinstance(vectorstore, PineconeVectorStore):
                 return PineconeTranslator()
 
+        try:
+            from langchain_mongodb import MongoDBAtlasVectorSearch
+        except ImportError:
+            pass
+        else:
+            if isinstance(vectorstore, MongoDBAtlasVectorSearch):
+                return MongoDBAtlasTranslator()
+
+        try:
+            from langchain_chroma import Chroma
+        except ImportError:
+            pass
+        else:
+            if isinstance(vectorstore, Chroma):
+                return ChromaTranslator()
+
         raise ValueError(
             f"Self query retriever with Vector Store type {vectorstore.__class__}"
             f" not supported."