[llvm] [llvm-cov][CoverageMapping] Fix LineCoverageStats incorrectly using gap region count (PR #203740)

[Maksim Levental via llvm-commits]

makslevental wrote:

BTW feel free to suggest some other test cases - I iterated on a slightly larger test to produce the minimal repro.

https://github.com/llvm/llvm-project/pull/203740