[llvm] [llvm-cov] Fix branch counts of template functions (second attempt) (PR #135074)

[Alan Phipps via llvm-commits]

evodius96 wrote:

Hi! SOrry for the delay. Can you explain how you get around the non-deterministic behavior?  The changes seem OK to me but I want to make sure I'm not overlooking the actual difference.

https://github.com/llvm/llvm-project/pull/135074