fix: propagate disabled state to lookup server

[cristianscheid]

• Resolves: Propagate disable state to the lookup-server lookup-server#183

Summary

Currently, disabled users are kept on the lookup server as if they were enabled.

This PR introduces the following mechanisms to address this:

• lib/Listeners/UserChanged listens for enable/disable events
  • when a user is disabled, removes them from the lookup server
  • when a user is re-enabled, adds them back to the lookup server
• lib/Slave::batchUpdate() now checks if a user is enabled before registering them on the lookup server
  • this method syncs all known instance users with the lookup server
  • used by occ globalsiteselector:users:update and the BackgroundJobs/UpdateLookupServer cron job
• lib/Controller/SlaveController::autoLogin() was updated to handle disabled users that were already present on the lookup server
  • catches DisabledUserException on login and removes the user from the lookup server in that case

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)
• Labels added where applicable (ex: bug/enhancement, 3. to review, feature component)
• Milestone added for target branch/version (ex: 32.x for stable32)

AI (if applicable)

• The content of this PR was partly or fully generated using AI

[cristianscheid]

As described here, added a new commit to include some changes that I believe would be a good addition to this PR. Tested it locally and looks good.

[rikled]

Maybe it would make sense to include the tests from here as well?

[cristianscheid]

Maybe it would make sense to include the tests from here as well?

hey @rikled, I don't think they'd quite apply here, since this PR takes a different approach:

// lib/Listeners/UserChanged.php

// this PR:
if ($event->getValue() === false) {
	// user was disabled, remove from lookup server
	$this->slave->preDeleteUser($params);
	$this->slave->deleteUser($params);
} else {
	// user was enabled, add to lookup server
	$this->slave->createUser($params);
}

// PR #213:
// updateUser() routes enabled→add, disabled→remove
$this->slave->updateUser($event->getUser());

also since the tests from #213 were specifically checking that enabled/disabled users get pushed/deleted via updateUser(), I don't think should be included here, as that method falls outside the scope of this PR

that said, thanks for taking the time to write the tests, and feel free to open a separate PR with some tests if you feel like it

[ArtificialOwl]

@cristianscheid should we backport this to stable2.7 ?

[cristianscheid]

/backport to stable2.7