refactor: prepend `Autoloader`'s own autoload functions #14650

Job	Run time
Setup PHP Version for Code Coverage	3s
Others (8.2) / Sanity Tests	2m 3s
Others (8.4) / Sanity Tests	2m 3s
Others (8.3) / Sanity Tests	2m 3s
Others (8.5) / Sanity Tests	1m 51s
CacheLive	0s
SeparateProcess	0s
DatabaseLive	0s
Upload coverage results to Coveralls	0s
	8m 3s

Provide feedback