Revert "Revert "Revert "release: disallow aliases"""

This reverts commit 0d8076b99c.

This has been causing people issues so it’s easiest to leave it off
for now. Eventually I will do an RFC or some other PR where we can
have more discussion on benefits of doing this in CI.

Fixes #44299

I still think it’s still worth keeping aliases out of Nixpkgs but we
don’t need to block evaluation on it.

pkgs/top-level/release.nix

@@ -16,7 +16,7 @@
   # Strip most of attributes when evaluating to spare memory usage
 ,  scrubJobs ? true
   # Attributes passed to nixpkgs. Don't build packages marked as unfree.
-,  nixpkgsArgs ? { config = { allowUnfree = false; inHydra = true; allowAliases = false; }; }
+,  nixpkgsArgs ? { config = { allowUnfree = false; inHydra = true; }; }
 }:
 
 with import ./release-lib.nix { inherit supportedSystems scrubJobs nixpkgsArgs; };