[compiler-rt] [asan][test] Fix flake in asan_lsan_deadlock test (PR #141145)

[Paul Kirth via llvm-commits]

ilovepi wrote:

> > Before landing I do want to get confirmation that the SUMMARY bit wasn't intended to be proof that the deadlock can't happen.
> 
> I am pretty sure when it deadlocks it will just time out.

That's also my take, but wanted to confirm. :)

https://github.com/llvm/llvm-project/pull/141145