Make clearer that force send interval is related to logs
What does this MR do?
Modifies the wording for the FF_USE_DYNAMIC_TRACE_FORCE_SEND_INTERVAL
option.
Why was this MR needed?
Follow-up suggestion from #28126 (closed): Make it clearer that this relates to trace logs.
What's the best way to test this MR?
N/A
What are the relevant issue numbers?
Closes #28126 (closed)