Fatal error when `get_users()` is called before `plugins_loaded`

[desrosj]

From ticket:55594#comment:14:

Just a heads up that this change (specifically ​this one) breaks plugins that called get_users() before plugins_loaded ran.

• ​https://stackoverflow.com/questions/74289047/wordpress-function-cache-users-not-found-after-update-to-6-1
• ​https://stackoverflow.com/questions/74290907/uncaught-error-call-to-undefined-function-cache-users

This query also surfaces broken sites in the wild: ​https://www.google.com/search?q=Call+to+undefined+function+cache_users()

The changeset in question: [53655].

Thanks @obenland for the report.

[obenland]

Apologies, I cross-linked to #55594 from #56952 but that didn't seem to actually cross-post to the ticket.