plugins.auth_ed25519 test falky - dropped users with connection warning

CURRENT_TEST: plugins.auth_ed25519

--- /home/buildbot/s390x-sles-1507/build/mysql-test/suite/plugins/r/auth_ed25519.result	2026-05-05 09:41:55.000000000 +0000

+++ /home/buildbot/s390x-sles-1507/build/mysql-test/suite/plugins/r/auth_ed25519.reject	2026-05-05 12:31:22.652826129 +0000

@@ -87,6 +87,8 @@

 connection default;

 drop user test2@localhost;

 drop user test1@localhost;

+Warnings:

+Note	4227	Dropped users 'test1'@'localhost' have active connections. Use KILL CONNECTION if they should not be used anymore.

 uninstall plugin ed25519;

 select ed25519_password("foo");

 ERROR HY000: Can't initialize function 'ed25519_password'; Authentication plugin ed25519 is not loaded

Result length mismatch