[compiler-rt] [TSan][compiler-rt] Defer symbolization of Reports to as late as possible (PR #151120)

[Thurston Dang via llvm-commits]

thurstond wrote:

> This is the refactoring portion of: #150994. My aim is for this change to replicate current behaviour - just with Symbolization done explicitly (and later than previously).

I think that should be https://github.com/llvm/llvm-project/pull/149516 instead?

Please add a sentence on what this refactoring enables in the future (a blurb of #149516).

https://github.com/llvm/llvm-project/pull/151120