wifi: mac80211_hwsim: Handle BSS_CHANGED_VALID_LINKS

In station mode, set the active links to all the usable
links.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230920211508.6218307226d3.I249f52b4773423a33c3121e31002abe0a8d98e78@changeid


Signed-off-by: Johannes Berg <johannes.berg@intel.com>