Describe the bug
LongTaskTimer#measure does not return the maximum duration, see current code:

The following is missing:
new Measurement(() -> max(baseTimeUnit()), Statistic.MAX)

Environment

• Micrometer version: current main branch

Expected behavior
https://docs.micrometer.io/micrometer/reference/concepts/long-task-timers.html:

Long task timers publish at least the following statistics:

• Active task count
• Total duration of active tasks
• The maximum duration of active tasks