Match usernames and force a re-login if it doesn't match to avoid confusion

[lazka]

(migrated this issue from gitlab)

• User A logs into NC
• User B in the same session uses a file picker which depends on webapppassword
• User B gets access to files of A and is confused (not a security issue, every normal browser access would be possible)

Should we somehow give a (optional) username/loginName to WebAppPassword and if that doesn't match the current user then force a re-login?

Is that possible?