network: drop assertions to check link state in netlink callback handlers

As, the link may be dropped while configuring addresses or routes.

Fixes #17920.

src/network/networkd-address.c

@@ -932,8 +932,6 @@ static int address_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link)
         assert(link);
         assert(link->ifname);
         assert(link->address_messages > 0);
-        assert(IN_SET(link->state, LINK_STATE_CONFIGURING,
-               LINK_STATE_FAILED, LINK_STATE_LINGER));
 
         link->address_messages--;
 

src/network/networkd-route.c

@@ -1192,8 +1192,6 @@ static int route_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) {
 
         assert(link);
         assert(link->route_messages > 0);
-        assert(IN_SET(link->state, LINK_STATE_CONFIGURING,
-                      LINK_STATE_FAILED, LINK_STATE_LINGER));
 
         link->route_messages--;