fix(metadataFiltering): prefilters not being passed to vector query (#412)

examples/chromadb/preFilters.ts

...ages/core/src/indices/vectorStore/VectorIndexRetriever.ts

packages/core/src/indices/vectorStore/VectorStoreIndex.ts

packages/core/src/storage/vectorStore/ChromaVectorStore.ts

...s/core/src/storage/vectorStore/MongoDBAtlasVectorStore.ts