chore: cleanup verbose logs

[bfoley13]

Reason for Change:
Cleanup overly verbose logging. These logs dump the prompts which can be very slow for large prompts

Requirements

• added unit tests and e2e tests (if applicable).

Issue Fixed:

Notes for Reviewers:

[kaito-pr-agent]

Title

Enhance logging by removing verbosity and improving log message clarity

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Description

• Removed verbose logging for chat engine creation

• Replaced prompt content with prompt size in log message

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Changes walkthrough 📝

	Relevant files
Enhancement	base.py Improve logging clarity and reduce verbosity                          presets/ragengine/vector_store/base.py Removed verbose=True parameter from as_chat_engine method Updated log message to include prompt size instead of full prompt content +1/-2

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[kaito-pr-agent]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Logging Information The log message now includes prompt_size instead of the full prompt. Ensure that prompt_size provides sufficient information for debugging without exposing potentially sensitive data. f"Creating chat engine for index '{request.get('index_name')}' with prompt size: {prompt_len}"