[llvm] [llvm-cov] Fix branch counts of template functions (#111743) (PR #113925)

[via llvm-commits]

stma247 wrote:

> > Thanks for the review.
> > When will this PR be merged?
> 
> You can trigger the merge yourself from this pull request.

The merge button is always disabled for me with info:
Only those with [write access] to this repository can merge pull requests.

https://github.com/llvm/llvm-project/pull/113925