OAK-11562 : removed usage of Guava's Iterables.addAll (#2149)

Co-authored-by: Rishabh Kumar <diam@adobe.com>

Author: rishabhdaim

oak-authorization-cug/src/main/java/org/apache/jackrabbit/oak/spi/security/authorization/cug/impl/CugAccessControlManager.java

@@ -369,7 +369,7 @@ private Set<String> collectEffectiveCandidates(@NotNull Root r, @NotNull Iterabl
             String path = eval.remove();
             Tree t = immutableRoot.getTree(path);
             if (PathUtils.denotesRoot(path)) {
-                Iterables.addAll(eval, nestedCugPaths(t));
+                nestedCugPaths(t).forEach(eval::add);
             }
             if (CugUtil.isSupportedPath(path, supportedPaths)) {
                 Tree cug = CugUtil.getCug(t);
@@ -378,7 +378,7 @@ private Set<String> collectEffectiveCandidates(@NotNull Root r, @NotNull Iterabl
                     if (!Collections.disjoint(ImmutableSet.copyOf(principalNames), ImmutableSet.copyOf(pNames.getValue(Type.STRINGS)))) {
                         candidates.add(path);
                     }
-                    Iterables.addAll(eval, nestedCugPaths(cug));
+                    nestedCugPaths(cug).forEach(eval::add);
                 }
             }
         }