Auto merge of #120264 - weihanglo:split-dward-kind-lto, r=michaelwoerister

test: enable `unpacked-lto` tests

This enables the correct `unpacked-lto` tests.

Not sure whether `.o` should be removed.
They are bitcode for linker-plugin-lto, though there might be some `.o` for `#[no_builtins]`?