fix(network): handle ConnectionResetError in RawConnection and add tests

[gitsofaryan]

cc : @seetadev

Description

This PR addresses an issue where ConnectionResetError was bubbling up from RawConnection.read() and RawConnection.write(), causing crashes in consumers that consistently expect RawConnError for connection issues.

Changes

• libp2p/network/connection/raw_connection.py: Updated read and write methods to catch ConnectionResetError and wrap it in RawConnError.
• tests/core/network/test_raw_connection.py: Added a new test suite to verify that RawConnection correctly handles connection resets on both read and write operations.
• tests/core/relay/test_circuit_v2_transport.py: Added tests for TrackedRawConnection to ensure it properly delegates and handles these errors when wrapping a connection.

Verification

• Validated with new unit tests in tests/core/network/test_raw_connection.py which simulate ConnectionResetError from the underlying stream.