feat(dragonwilds): MATCH_PUBLIC so the join code works behind a relay

The server advertises the address its outgoing traffic comes from, so it
binds its public ports (-Port / -BeaconPort from {PUBLIC_PORT_n}) and, behind
Public Bypass, sends its traffic out through the relay. Adds portMode to the
schema and to import's field order.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MZxvxViV6QwAtVWT3saGvs

games/runescape-dragonwilds-native-linux/game.yaml

@@ -2,7 +2,7 @@
 id: runescape-dragonwilds-native-linux
 name: 'RuneScape: Dragonwilds (Native Linux Server)'
 defaultDockerImage: cm2network/steamcmd:root
-defaultStartupCommand: ./RSDragonwildsServer.sh -log -Port=7777
+defaultStartupCommand: ./RSDragonwildsServer.sh -log -Port={PUBLIC_PORT_7777} -BeaconPort={PUBLIC_PORT_8888}
 requiredMemoryMb: 10240
 requiredDiskMb: 20480
 defaultPorts:
@@ -113,5 +113,6 @@ backupPaths:
   - RSDragonwilds/Saved
 maxBackupSizeMb: 5000
 publicIpConfigKey: MULTIHOME
+portMode: MATCH_PUBLIC
 maxPlayersConfigKey: MaxPlayers
 aiCoverPrompt: 'A cinematic wide shot of Ashenfall in the fantasy world of Gielinor from RuneScape: Dragonwilds. Ancient stone spires and forgotten fortresses rise amidst untamed wilderness. Colossal ancient dragons circle through stormy twilight skies illuminated by magical embers, while adventurers gather around a runic encampment wielding enchanted sorcery and survival gear.'