[FIX JENKINS-35381] Restrict ResourceBundleUtil (#2393)

(cherry picked from commit 9657629)

Author: daniel-beck

core/src/main/java/jenkins/util/ResourceBundleUtil.java

@@ -39,6 +39,7 @@
  * @author <a href="mailto:[email protected]">[email protected]</a>
  * @since 2.0
  */
+@Restricted(NoExternalUse.class)
 public class ResourceBundleUtil {
 
     private static final Map<String, JSONObject> bundles = new ConcurrentHashMap<>();
@@ -52,7 +53,6 @@ private ResourceBundleUtil() {
      * @return The bundle JSON.
      * @throws MissingResourceException Missing resource bundle.
      */
-    @Restricted(NoExternalUse.class)
     public static @Nonnull JSONObject getBundle(@Nonnull String baseName) throws MissingResourceException {
         return getBundle(baseName, Locale.getDefault());
     }
@@ -64,7 +64,6 @@ private ResourceBundleUtil() {
      * @return The bundle JSON.
      * @throws MissingResourceException Missing resource bundle.
      */
-    @Restricted(NoExternalUse.class)
     public static @Nonnull JSONObject getBundle(@Nonnull String baseName, @Nonnull Locale locale) throws MissingResourceException {
         String bundleKey = baseName + ":" + locale.toString();
         JSONObject bundleJSON = bundles.get(bundleKey);