Also hide group from direct matches

Signed-off-by: Joas Schilling <coding@schilljs.com>

lib/private/Collaboration/Collaborators/GroupPlugin.php

@@ -128,7 +128,7 @@ class GroupPlugin implements ISearchPlugin {
 			// On page one we try if the search result has a direct hit on the
 			// user id and if so, we add that to the exact match list
 			$group = $this->groupManager->get($search);
-			if ($group instanceof IGroup && (!$this->shareWithGroupOnly || in_array($group->getGID(), $userGroups))) {
+			if ($group instanceof IGroup && !$group->hideFromCollaboration() && (!$this->shareWithGroupOnly || in_array($group->getGID(), $userGroups))) {
 				$result['exact'][] = [
 					'label' => $group->getDisplayName(),
 					'value' => [