Merge pull request #35268 from callithea/wip-45710-octopus

octopus: mgr/dashboard: redesign the login screen

Reviewed-by: Tatjana Dehler <tdehler@suse.com>
Reviewed-by: Alfonso Martínez <almartin@redhat.com>
Reviewed-by: Ernesto Puerta <epuertat@redhat.com>

diff --cc src/pybind/mgr/dashboard/frontend/src/styles/defaults.scss
Simple merge