Make use of XMLReader::fromStream

[CarlSchwan]

Available since php 8.4

[phil-davis]

If there is a reasonable way to do this "under the hood" only if the function exists (PHP is 8.4 or greater), and fallback to existing behavior on PHP 8.2 and 8.3 then someone can make a proposed PR now.

[CarlSchwan]

WIP: #338