nginx: explicitly add libxcrypt as buildinput

This fixes `nginx` being unable to hash passwords, when built without `perl`,
as `libxcrypt` was added to `nginx` only as propagatedBuildInput from `perl`

RESOLVES #57979

pkgs/servers/http/nginx/generic.nix

@@ -8,6 +8,7 @@ outer@{
   pcre2,
   libxml2,
   libxslt,
+  libxcrypt,
   nginx-doc,
 
   nixosTests,
@@ -115,13 +116,13 @@ mkDerivation {
     pcre2
     libxml2
     libxslt
+    libxcrypt
   ]
   ++ buildInputs
   ++ mapModules "buildInputs"
   ++ lib.optional withGeoIP geoip
   ++ lib.optional withImageFilter gd
   ++ lib.optional withPerl perl;
-
   dontAddStaticConfigureFlags = true;
 
   configureFlags = [