[compiler-rt] [TSan] Fix deadlocks during TSan error reporting on Apple platforms (PR #151495)

[Thurston Dang via llvm-commits]

https://github.com/thurstond commented:

> * All platforms: move OutputReport (and thus symbolization) after the locked region when reporting.

What is the intuition on why this is safe on all platforms?
(I don't have a counterexample, but it's not immediately obvious it is safe. If this change had been conditionally `#if SANITIZER_APPLE`, it would be a straightforward app(rov)al.)

https://github.com/llvm/llvm-project/pull/151495