Reapply#3 "[RemoveDIs] Load into new debug info format by default in LLVM (#89799)"

Reapplies commit 91446e2a, which was reverted due to a downstream error,
discussed on the pull request. The error could not be reproduced
upstream, and cannot be reproduced downstream as-of current main, so
until the error can be confirmed to still exist this patch should
return.

This reverts commit 23f8fac7.