fix: remove usage of nest_asyncio

[0xRAG]

Description

Based on customer feedback:

CDP SDK uses nest_asyncio.apply() which is not maintained and is not compatible with uvloop that gives increased performance to our services. So we are effectively blocked from using the SDK. Don't think the python SDK should be using nest_asyncio.apply()

Tests

Checklist

A couple of things to include in your PR for completeness:

• Updated the typescript README if relevant
• Updated the python README if relevant
• Added a changelog entry
• Added e2e tests if introducing new functionality

[cb-heimdall]

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