Infinite dot when some spawned thread crash which make indent more than 75

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## Summary of Bug

I find an issue in my program.
I am trying to spawn thread to run some tasks and the tasks call start_timer and then panic before end_timer. It is normal in my program so I just handle the panic error from thread and try to do other tasks in new spawn threads.
After panic happens some times, my program hang at busy print dot infinitely.

## Version

## Steps to Reproduce

I cannot stable reproduce it but after reviewing the code, I think it is very probably because of the overflow issue when global static INDENT_NUM exceed some number and makes this indent_amount exceed 75 and cause the issue.
https://docs.rs/ark-std/latest/src/ark_std/perf_trace.rs.html#125

After each panic of my spawn thread, I can see more and more dots before Start: and End: logging in my programe and finally if it exceed 75 and the next time when I call a end_timer will trigger the infinitely printing of dot.

Start with the perf_trace.rs code at the linked source location, focusing on how start_timer and end_timer update the global INDENT_NUM after a spawned thread panics. Reproduce the panic-and-respawn sequence if possible and verify that indentation remains bounded and end_timer no longer causes infinite dot output.

Written by the indexing model from the issue text.