MySQLi support for caching_sha2_password

[mattkolb]

From manual page: https://php.net/mysqli.requirements

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The manual page says conflicting things.

"caching_sha2_password, a plugin that is not recognized by the older PHP (mysqlnd) releases"

"The caching_sha2_password plugin will be supported in a future PHP release"

Is it supported or not? The following seems to indicate that 7.4 supports caching_sha2_password.
https://stackoverflow.com/questions/59231143/does-mysqli-have-support-for-caching-sha2-password-in-php-7-4

That would be backed up by this bug report that seems to fix problems with caching_sha2_password in PHP 7.4
https://bugs.php.net/bug.php?id=79011