Merge pull request #63174 from afreen23/fix-nvme-combobox

mgr/dashboard: Add default state when gateway groups are empty

Reviewed-by: Aashish Sharma <aasharma@redhat.com>
Reviewed-by: Ankush Behl <cloudbehl@gmail.com>
Reviewed-by: Pedro Gonzalez Gomez <pegonzal@redhat.com>

diff --cc src/pybind/mgr/dashboard/frontend/src/app/shared/api/nvmeof.service.ts
Simple merge