Merge pull request #24200 from jecluis/wip-dashboard-fix-ac

mgr/dashboard: no side-effects on failed user creation

Reviewed-by: Ricardo Dias <rdias@suse.com>
Reviewed-by: Volker Theile <vtheile@suse.com>

diff --cc src/pybind/mgr/dashboard/services/access_control.py
Simple merge