net: tcp: refresh tcp_mstamp for compressed ack in timer

net: tcp: refresh tcp_mstamp for compressed ack in timer

For now, we refresh the tcp_mstamp for delayed acks and keepalives, but
not for the compressed ack in tcp_compressed_ack_kick().

I have not found out the effact of the tcp_mstamp when sending ack, but
we can still refresh it for the compressed ack to keep consistent.

Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20241003082231.759759-1-dongml2@chinatelecom.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>