"Set all faders to new client level" only affects current users

Describe the bug

When using "Set all faders to new client level" this only resets the faders of current users, if a previous user signs in it's level is still set to the previous level.

To Reproduce

Sign in to a server with multiple users.
Set all levels to i.e. max.
Sign out one user.
use "Set all faders to new client level".
sign in the previous user again and it's level will still be set to max. not the "New Client Level".

Expected behavior

Just like when using "Clear All Stored Solo and Mute Settings" also the stored levels should be reset to new client level when using "Set all faders to new client level"

Screenshots

Operating system

n.a.

Version of Jamulus

3.6.x, 3.7.0
Additional context

Maybe also an added option to delete all stored users?

Inizia riproducendo la sequenza descritta con più utenti: modifica tutti i fader, disconnetti un utente, applica "Set all faders to new client level" e accedi nuovamente con quell'utente. Traccia come vengono gestiti i fader correnti e i livelli utente memorizzati, e considera l'issue completata quando sia gli utenti correnti sia quelli che ritornano ricevono il nuovo livello del client.