Log warning if trace message exceeds Sanitizer.MAX_MESSAGE_LENGTH #1021

Is your feature request related to a problem? Please describe.
I spent too much time debugging why we had an odd drop in a metric in a PowerBI dashboard that we power with our AI telemetry. The root cause ended up being some trace messages getting silently truncated.

Describe the solution you would like
Enabling SDKLogger should cause some warnings to be printed out in the cases where the messages exceed Sanitizer.MAX_MESSAGE_LENGTH.

Describe alternatives you have considered
n/a

Additional context
n/a