fix: ignore files in appdata when counting unscanned files

Signed-off-by: Richard Steinmetz <richard@steinmetz.cloud>

lib/BackgroundJob/BackgroundScanner.php

@@ -214,6 +214,7 @@ public function getUnscannedFiles() {
 				$query->expr()->like('path', $query->createNamedParameter('files/%')),
 				$query->expr()->notLike('s.id', $query->createNamedParameter('home::%'))
 			))
+			->andWhere($query->expr()->notLike('fc.path', $query->createNamedParameter('appdata_%')))
 			->andWhere($this->getSizeLimitExpression($query))
 			->setMaxResults($this->getBatchSize() * 10);