iwlwifi: re-enable "Invalid TXQ id" logging

Various reports recently hit the "Invalid TXQ id" in iwlwifi again.
Unconditionally enable logging and add a note to report to a specific
PR in the log message for now.
Along with 018d93ece16b this will hopefully help us to understand what
is going on.

Sponsored by: The FreeBSD Foundation
PR: 274382

(cherry picked from commit ad134f8ab768e3b1d2db203f1cc963bdf0eea857)