[azure-eventhub] Change input v1 tracing configuration to opt-in

[zmoog]

With #40451, we added a tracing option in the input v1 that allows the internal Event Hubs SDK logs to reach the main input logger.

This allows better visibility into the internal SDK workings. During normal operations, with log level set to INFO, the input logs no messages.

However, a few customers reported higher than anticipated error logs. These error logs are an essential signal to troubleshoot the root cause. However, event if these are edge cases, we should give the option to completely opt out from tracing when needed.

[elasticmachine]

Pinging @elastic/obs-ds-hosted-services (Team:obs-ds-hosted-services)

[zmoog]

The logs tracer uses the same log level as Beats. However, in a few circumstances, the number of error logs can be very high.