Auto merge of #114480 - ozkanonur:fix-stage0-compiler-llvm, r=Mark-Simulacrum

copy the correct version of LLVM into the stage0 sysroot

In some cases(see rust-lang/rust#109314), when the stage0
compiler relies on more recent version of LLVM than the beta compiler, it may not
be able to locate the correct LLVM in the sysroot. This situation typically occurs
when we upgrade LLVM version while the beta compiler continues to use an older version.

Fixes #109314

Author: bors