codecov: disable inline annotations on PRs (#24362)
codecov: disable inline annotations on PRs (#24362)

Inline codecov annotations make the code hard to read, and they add annotations
in files that seemingly have nothing to do with the PR. Sadly, they add a whole
lot of noise and not a lot of benefit over looking at the PR on codecov. We
should just have people look at the coverage on codecov itself.
LLNL/spack,LLNL/spack,LLNL/spack,LLNL/spack,LLNL/spack