Describe the bug

The internal QQ process names are of the form vhost_queue. This could cause issues when vhost and queue names contain underscores.

Reproduction steps

1. Create a 3.13.0 broker.
2. Create 2 vhosts called "foo" and "foo_bar"
3. On vhost "foo", create a QQ called "bar_baz"
4. On vhost "foo_bar", create a QQ called "baz"
5. Observe the following error:

Expected behavior

User can successfully create both QQs.

Additional context

No response