The configure phase of `stdenv` now runs `patchShebangs` on
`configureScript`.
Did not remove `patchShebangs` in packages which override `configurePhase`
Implements a few usability changes for dracut framework by suffixing
rather than prefixing `DRACUT_PATH` (so that downstream consumers can
more easily override it) and reduce closure size by bundling fewer
default utilities in `DRACUT_PATH`.
Done per comments at https://github.com/NixOS/nixpkgs/pull/210075#discussion_r1088822274.