Revisit php performance configuration

[dasrecht]

During some performance related work for a client, i realized that our images set pcre.jit to 0 https://github.com/uselagoon/lagoon-images/blame/main/images/php-fpm/00-lagoon-php.ini.tpl#L23-L23C9

This seems to only affect the 00-lagoon-php config, but I think we should revisit this for the default configuration because pcre.jit might be disabled on the default configuration.

Based on the php.net configuration this should be set to 1 per default which also has a performance gain on regex heavy php code
https://www.php.net/manual/en/pcre.configuration.php

[dasrecht]

There seems to be some discussion about enabling or disabling JIT by default oerdnj/deb.sury.org#1924