fix: Unset classes in container to reduce side-effects between tests

[SystemKeeper]

Summary

When executing 32bit tests we observe some sideffects as we remove all files from the data directory at

server/tests/lib/TestCase.php

Lines 396 to 414 in 22791c5

	protected static function tearDownAfterClassCleanStrayDataFiles($dataDir) {
	$knownEntries = [
	'nextcloud.log' => true,
	'audit.log' => true,
	'owncloud.db' => true,
	'.ocdata' => true,
	'..' => true,
	'.' => true,
	];
	if ($dh = opendir($dataDir)) {
	while (($file = readdir($dh)) !== false) {
	if (!isset($knownEntries[$file])) {
	self::tearDownAfterClassCleanStrayDataUnlinkDir($dataDir . '/' . $file);
	}
	}
	closedir($dh);
	}
	}

which includes appdata directory. Since we only check once if the appdata folder exists, following runs might fail, when the classes are retained. Therefore we specifically unset some classes to ensure the tests run through.

Test-Run: https://github.com/nextcloud/server/actions/runs/18461056236/job/52592428489

[come-nc]

💙