[stable26] fix(db): also chunk MariaDB deletes

[miaulalala]

Manual backport of #1309

[miaulalala]

Test failing with:

Run mkdir data
The process control (PCNTL) extensions are required in case you want to interrupt long running commands - see https://www.php.net/manual/en/book.pcntl.php
Additionally the function 'pcntl_signal' and 'pcntl_signal_dispatch' need to be enabled in your php.ini.

In Install.php line 126:
                                    
  [InvalidArgumentException]        
  Database <oci> is not supported.