Spring Security AclClassIdUtils is package private and not accessible

Describe the bug This is a follow up from #10079, as i discovered, that AclClassIdUtils is package private, wich seems a little bit weird to me, because there is a legit use case for this?

Expected behavior This class should be part of the public api, so you dont need to create something similair for yourself.

Sample

A link to a GitHub repository with a minimal, reproducible sample.

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