installation: filter padding from binary installs, too (#25600)
installation: filter padding from binary installs, too (#25600)

#25303 filtered padding from build output, but it's still there in binary install/relocate output,
so our CI logs are still quite long and frequently hit the limit.

- [x] add context handler from #25303 to buildcache installation as well
LLNL/spack,LLNL/spack,LLNL/spack,LLNL/spack,LLNL/spack