wifi: iwlwifi: mld: handle SW reset w/o NIC error

For the upcoming TOP reset, the sw_reset() method may be
called without nic_error() before it. In this case, also
abort any still pending scans and set in_hw_restart.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250430155443.b732ff4e9f31.I3948c2d892f1ee82b3a6bf9f123be02a1eaa82e5@changeid