Several Testnet metrics missing

### Did you read the documentation and guides?

- [X] I have inspected the documentation.

### Is there an existing issue?

- [X] I have searched the existing issues.

### Description of the problem

Since the last Testnet update r-13.0, I have noticed that metrics such as "aleph_Imported", "aleph_Ordering", "aleph_Ordered", "aleph_Aggregating" or "aleph_Finalized" are no longer available.

As a result, the graphs for "Block Time from Import to Finalized" and "AZERO Transactions per Second" are no longer displayed in the Grafana Dashboard.

Which metrics are now required to display the two graphs mentioned for the testnet? Mainnet does not seem to be affected.

For example, this is the query that was previously used to display the "Block Time from Import to Finalized" graph:
`aleph_Imported + aleph_Ordering + aleph_Ordered + aleph_Aggregating + aleph_Finalized
`

I don't know if you really need but here is the log of the current running Testnet Validator:
[logs.txt](https://github.com/Cardinal-Cryptography/aleph-node-issues/files/14812155/logs.txt)

### Information on your setup.

1) Running on testnet or mainnet?
It affects the Testnet environment

2) Version of aleph-node
0.13.2

3) How do you run aleph-node - directly, docker, aleph-node-runner?
Through docker

3) Is it a validator node or RPC-node?
It's a validator node

4) what flags do you run aleph-node with?
I'm just using -n $VALIDATOR_NAME --ip $IP

5) operating system
Ubuntu 20.04

6) hardware
AMD Ryzen 9 3900 12-Core Processor, 128GB RAM, 2TB NVMe (RAID1)

### Steps to reproduce

Start a Testnet Validator Node at least on Version r-13.0, when evaluating the metrics the mentioned metrics are no longer transmitted.

### Did you attach relevant logs?

- [X] I have attached logs (if relevant).

Inizia con il logs.txt allegato del validatore Testnet che esegue aleph-node 0.13.2 tramite Docker, quindi ispeziona le query del Grafana Dashboard per i due grafici mancanti. Confronta le metriche disponibili con la query precedente utilizzando aleph_Imported, aleph_Ordering, aleph_Ordered, aleph_Aggregating e aleph_Finalized; il lavoro è completato quando sono state identificate le metriche attuali necessarie per ripristinare entrambi i grafici.

Scritto dal modello di indicizzazione a partire dal testo della issue.