wifi: iwlwifi: mld: avoid selecting bad links

wifi: iwlwifi: mld: avoid selecting bad links

Currently, we don't select a link that wasn't heared in the last 5
seconds.
But if the link started to suffer from missed beacons more recent than
that, we might select this link even we really shouldn't,
leading to a disconnection instead of a link switch.

Fix this by checking if a link was heared in the last MLO scan,
if not - don't include it in the link selection.
Since we do an MLO scan on missed beacons, we will not hear that link in
that scan, and won't select it.

Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Link: https://patch.msgid.link/20250309073442.8f950497219e.I51306021fe9231a8184e89c23707be47d3c05241@changeid
[replace cast with ULL constant]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>