Generate minimal sentry-python reproduction

[szokeasaurusrex]

This PR provides a minimal reproduction for issue #4657, where the clickhouse-driver integration prematurely consumes generators when send_default_pii is enabled.

The reproduction includes:

• simple_reproduce.py: A clear demonstration of the generator consumption.
• reproduce_issue.py: A comprehensive script showing behavior with and without Sentry.
• test_generator_issue.py: A pytest-compatible test case to verify the fix.
• README.md: Instructions and details on the bug's location.

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