policy: replace entries with keys

Replaced the entries with keys since the values of the entries are not
used, and changed loop style to avoid mangled `Symbol.iterator`s and
to keep consistency.

PR-URL: #41482
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

lib/internal/policy/manifest.js

@@ -130,7 +130,9 @@ class DependencyMapperInstance {
       this.#patternDependencies = undefined;
     } else {
       const patterns = [];
-      for (const { 0: key } of ObjectEntries(dependencies)) {
+      const keys = ObjectKeys(dependencies);
+      for (let i = 0; i < keys.length; i++) {
+        const key = keys[i];
         if (StringPrototypeEndsWith(key, '*')) {
           const target = RegExpPrototypeExec(/^([^*]*)\*([^*]*)$/);
           if (!target) {