Allow LDAP search users with *term*

Fix nextcloud#11540 and nextcloud#14153

Signed-off-by: Sebastien Marinier <[email protected]>

apps/user_ldap/lib/Access.php

@@ -1564,7 +1564,7 @@ private function prepareSearchTerm(string $term): string {
 		if ($term === '') {
 			$result = '*';
 		} elseif ($allowEnum !== 'no') {
-			$result = $term . '*';
+			$result = '*' . $term . '*';
 		}
 		return $result;
 	}