wifi: mac80211: aggregation: remove deflink accesses for MLO

wifi: mac80211: aggregation: remove deflink accesses for MLO

If a station has connected with MLO (as indicated by valid_links
being non-zero, even if that may have just a single bit set), it
necessarily supports EHT/aggregation, so we don't need to check
the deflink for those cases.

Add conditions so we can support removing the link it/we used to
associate on.

Note that we still use the statistics in the deflink, but that's
a whole different story we will need to address separately.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250205110958.daf2a9e367f2.Id2c2dfbbe7451cc900ed88c5a81b33c55b4ab1cf@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>