Bug: Subscritpn Info Output isn't fully true or correct

### Current Behaviour

Currently only works on self or no active subscriptions

--

but if there's no active subscription (and maybe is not a valid ID, it doesnt throw anything)

But in-game for that user is `You do not have an active subscription`

### Expected Behaviour

That it correctly displayed the ID under any GM level even IF it's in valid id.

0 - None / Free "You do not have an active subscription"
1 - Peanuts - "You do not have an valid active subscription"
2 - Admier
6 - Watcher
7 - Keeper

So any value that aren't 0, 2, 6 or 7 should always be shown as "You do not have an valid active subscription" or something similiar.

### Steps to reproduce the problem

I only can think if you have an invalid number in the database as a sub, you dont get a sub and you dont get a sub info, this is from CC live issue.

### Extra Notes

_No response_

### AC rev. hash/commit

AzerothCore rev. af31aaa3741b 2025-09-03 20:29:15 -0300 (master branch) (Unix, RelWithDebInfo, Static)

### Operating system

CC's Linux Distro being used Ubuntu something

### Custom changes or Modules

CC's Modules

No source files, tests, or entry points are named. Start by reproducing the subscription-info command with no active subscription and with an invalid subscription value, then trace the module's output against the listed GM levels. Done means the output distinguishes free, valid, and invalid subscription states as described.

Written by the indexing model from the issue text.