Rollup merge of #130960 - cuviper:cdylib-soname, r=petrochenkov

Only add an automatic SONAME for Rust dylibs

#126094 added an automatic relative `SONAME` to all dynamic libraries, but it was really only needed for Rust `--crate-type="dylib"`. In Fedora, it was a surprise to see `SONAME` on `"cdylib"` libraries like Python modules, especially because that generates an undesirable RPM `Provides`. We can instead add a `SONAME` just for Rust dylibs by passing the crate-type argument farther.

Ref: https://bugzilla.redhat.com/show_bug.cgi?id=2314879

Author: matthiaskrgr