fixes

Author: Dhriti Chopra

google-cloud-storage/src/main/java/com/google/cloud/storage/GrpcStorageImpl.java

@@ -1682,8 +1682,8 @@ public Iterable<Bucket> getValues() {
           resp.getUnreachableList().stream()
               .map(
                   name -> {
-                    String encoded = bucketNameCodec.encode(name);
-                    return BucketInfo.newBuilder(encoded)
+                    String decoded = bucketNameCodec.decode(name);
+                    return BucketInfo.newBuilder(decoded)
                         .setIsUnreachable(true)
                         .build()
                         .asBucket(GrpcStorageImpl.this);