🔧 fix: Catch deleteVectors Errors & Update RAG API docs (#2299)

* fix(deleteVectors): handle errors gracefully

* chore: update docs based on new alternate env vars prefixed with RAG to avoid conflicts with LibreChat keys

docker-compose.override.yml.example

@@ -101,16 +101,6 @@ version: '3.4'
 #  rag_api:
 #    image: ghcr.io/danny-avila/librechat-rag-api-dev:latest
 
-# # USE RAG API IMAGE WITH A DIFFERENT OPENAI API KEY FROM THE ENV FILE
-#  rag_api:
-#   environment:
-#     - OPENAI_API_KEY=sk-your_openai_api_key
-
-# # OR, USE A CUSTOM ENVIRONMENT VARIABLE TO AVOID HARD-CODING IT
-#  rag_api:
-#   environment:
-#     - OPENAI_API_KEY=${OPENAI_EMBEDDINGS_API_KEY}
-
 # # ADD OLLAMA
 #  ollama:
 #    image: ollama/ollama:latest