Revert "sillytavern: fix build by pinning nodejs to v22"

This reverts commit e29bd3cd9a.
sillytavern now builds fine with nodejs_24.

pkgs/by-name/si/sillytavern/package.nix

@@ -1,7 +1,6 @@
 {
   buildNpmPackage,
   fetchFromGitHub,
-  nodejs_22,
   lib,
 }:
 buildNpmPackage (finalAttrs: {
@@ -18,9 +17,6 @@ buildNpmPackage (finalAttrs: {
 
   dontNpmBuild = true;
 
-  # https://github.com/NixOS/nixpkgs/issues/474535
-  nodejs = nodejs_22;
-
   # These dirs are not installed automatically.
   # And if they were not in place, the app would try to create them at runtime, which is of course impossible to achieve.
   postInstall = ''