### Description

Following #29282, command timeout is set at the `SSHHook` level while it used to be able to set at the `SSHOperator` level.

I will work on a PR as soon as i can.

### Use case/motivation

Ideally, i think we could have a default value set on `SSHHook`, but with the possibility of overriding it at the `SSHOperator` level.

### Related issues

#29282 

### Are you willing to submit a PR?

- [X] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

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from __future__ import annotations
import json
import random
import string
import textwrap
from io import StringIO
from unittest import mock
import paramiko
import pytest
from airflow import settings
from airflow.exceptions import AirflowException
from airflow.models import Connection
from airflow.providers.ssh.hooks.ssh import SSHHook
from airflow.utils import db
from airflow.utils.session import create_session
HELLO_SERVER_CMD = """
import socket, sys
listener = socket.socket()
listener.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
listener.bind(('localhost', 2134))
listener.listen(1)
sys.stdout.write('ready')
sys.stdout.flush()
conn = listener.accept()[0]
conn.sendall(b'hello')
"""
def generate_key_string(pkey: paramiko.PKey, passphrase: str | None = None):