[eduardomazolini]

Resolves the todo in SpigotListener / BungeeListener:

we should probably move this log message earlier in the process, so that we know that Floodgate has done its job

Why

floodgate.ingame.login_name ("Floodgate player logged in as X joined (UUID: ...)") was only logged on join (Spigot) or login (Bungee). A Bedrock player refused before that, for example by the server whitelist, therefore never had their Floodgate UUID printed anywhere:

[Geyser-Spigot] Player connected with username SomePlayer (...)
Disconnecting /1.2.3.4:0: You are not whitelisted on this server!
[floodgate] Floodgate player logged in as .SomePlayer disconnected

Together with #304 (the Global API not knowing every gamertag yet), this left server owners without a simple way to whitelist a Bedrock player who already tried to join: the UUID needed for whitelist.json / fwhitelist add <uuid> was not in the console.

Related: #304 (fwhitelist add <name> fails when the Global API does not know the gamertag) and #357 (whitelisting players that never joined). This PR does not change the name lookup; it makes the UUID of anyone who already tried to join available, so fwhitelist add <uuid> can be used meanwhile.

What

• Log floodgate.ingame.login_name in FloodgateHandshakeHandler, right after the player has been verified and added (only when the handshake does not disconnect them).
• Remove the now duplicated log calls from SpigotListener and BungeeListener.
• Velocity, which did not log this message before, now logs it as well.

The message key and its translations are unchanged.

Testing

• ./gradlew build passes.
• On a Paper 26.2 server (Geyser 2.11.3, whitelist on), with this build:
  • a Bedrock player not on the whitelist (and not an operator) now has the UUID logged before the kick:

    [floodgate] Floodgate player logged in as .X joined (UUID: 00000000-0000-0000-0009-...)
    Disconnecting /...: You are not whitelisted on this server!
    

  • a whitelisted Bedrock player gets that line once, right after the handshake (2 s before "joined the game"),
    with no duplicate from the listener.