Suppress TLS tracing in connection pool after first TLS handshake
The previous fix only suppressed TLS tracing in one.ml (one-shot
requests), but session-based requests go through conpool which makes
TLS connections separately. Add the same suppression mechanism to
conpool to ensure TLS debug hexdumps are suppressed for pooled
connections as well.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>