Patch/yield back async iterator

[emrgnt-cmplxty]

[!IMPORTANT] Enhance async handling in retrieval_router.py and update TypeScript components for improved search result display, with a version increment in pyproject.toml.

• Async Handling:
  • Add await asyncio.sleep(0) in stream_generator() functions in retrieval_router.py to yield control back to the event loop.
• TypeScript Components:
  • Update Answer.tsx to handle and display different types of search results (vector, entity, community) with correct metadata.
  • Modify DefaultQueries.tsx to update default queries.
  • Adjust SearchResults.tsx to display search results in a carousel format.
• Miscellaneous:
  • Increment version in pyproject.toml from 3.1.46 to 3.1.47.
  • Remove unused print statements in retrieval_router.py.

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