Revert "netfilter: conntrack: don't refresh sctp entries in closed state"

This reverts commit ba4b4035 which is
commit 77b33719 upstream.

It needs to be reverted as it breaks the build because the previous
commit 35452319 ("Revert "netfilter: conntrack: allow sctp hearbeat
after connection re-use"") reverted the change that this one is
"fixing" so it is not needed.

This fixes the build breakage with the merge of 5.4.181 into the
android11-5.4-lts branch.

Fixes: 56f5213d ("Merge 5.4.181 into android11-5.4-lts")
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ia09f24936ac37a047f48e6e22e1b72204b1a6600