Auto merge of #125411 - onur-ozkan:sanity-check-libstdc++, r=Mark-Sim…

…ulacrum

check host's libstdc++ version when using ci llvm

If the host's libstdc++ version is too old using ci-llvm may result in an ABI mismatch between the local libstdc++ and libLLVM.so. This PR adds a sanity check to immediately fail at the beginning of the bootstrap before starting the actual build. I am not sure if '8' is the best threshold, but it should be a good start and we can increase it anytime if needed.

Fixes #123037