Auto merge of #90527 - 12101111:libc_a, r=petrochenkov
Auto merge of #90527 - 12101111:libc_a, r=petrochenkov

Provide standalone libc.a in self-contained for musl and wasi

This is a prerequisites of https://github.com/rust-lang/libc/pull/2272, which in turn fix:

- https://github.com/rust-lang/wg-cargo-std-aware/issues/66
- https://github.com/rust-lang/rust/issues/89626

aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust