[Issue]: <title> Phase 1: Compose TextUnits include embedding？

[wangzhen38]

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Describe the issue

it contains embed-operation in your dataflow introduction[https://microsoft.github.io/graphrag/index/default_dataflow/], but I have not found embedding-related code.

Steps to reproduce

No response

GraphRAG Config Used

# Paste your config here

Logs and screenshots

No response

Additional Information

• GraphRAG Version:
• Operating System:
• Python Version:
• Related Issues:

[natoverse]

We moved all embedding operations to a consolidated generate_text_embeddings flow at the end. I'll make a note to update the docs