datapath-windows: Fix conntrack lookups for reversed keys

datapath-windows: Fix conntrack lookups for reversed keys

The conntrack table needs to be queried for entries in either directions
to determine if the packet is in forward direction or reply direction.

The current behavior ends up reversing the incoming packet's 5-Tuple for
every entry in the loop instead of doing it only once.

Testing Done:
- Verified that ICMP requests are no longer treated as replies
in Conntrack.

Co-authored-by: Sairam Venugopal <vsairam@vmware.com>
Signed-off-by: Anand Kumar <kumaranand@vmware.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
Acked-by: Shashank Ram <rams@vmware.com>
Acked-by: Alin Gabriel Serdean <aserdean@cloudbasesolutions.com>