[php-src] Issue #18773: `array_column()` should handle not-set column name

Issue: https://github.com/php/php-src/issues/18773 Author: mvorisek ### Description repro: https://3v4l.org/o3IRK man: https://www.php.net/manual/en/function.array-column.php It seems almost like a bug, but I would expect at least warning when $column_key param is not found in every row. Currently any row without the $column_key present are skipped without any warning. Alternatively I null can be assumed instead. If the original behaviour is preferred, I would like to have $strict param added which will require $column_key present in every row and $index_key too if set.