chore: rebuild dist

Rebuild all four ncc bundles (restore, save, save-only, restore-only)
with the updated ESM toolchain and node24-native @actions/* 3.x
dependencies. ncc now outputs ESM (import/export) instead of CJS
(require/module.exports), matching the "type": "module" declaration.

Each dist/ directory also gains a package.json generated by ncc to
declare the bundle's module type.

Author: LayZeeDK

dist/restore-only/index.js

@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}