[4] Allow numeric client IDs in extension update XMLs#41462

MacJoom merged 3 commits intojoomla:4.4-devjoomla/joomla-cms:4.4-devfrom

SniperSister:4.4-fixextensionadapteridhandlingSniperSister/joomla-cms:4.4-fixextensionadapteridhandlingCopy head branch name to clipboard