ML Tools support for nested fields

Versions (relevant - OpenSearch/Dashboard/Server OS/Browser):

Describe the issue:
As of version 2.13, we can use text chunking to split a long text into smaller chunks and generate vectors/embeddings for those chunks in a nested field. And then we can use this nested field in a semantic search (neural, neural_sparse, etc.). Is there a way to use these nested embedding fields in agent tools such as RAGTool, NeuralSparseSearchTool, VectorDBTool…?

Docker installation with 3 nodes (2xdata+ML)

Relevant Logs or Screenshots: