fix(rank-battle): use prod-verified bot cosmetic ids to unblock LoadOpponentAssets

The "Waiting for opponent" hang traced to BattleStartControl.IsReady never
flipping true. That's gated by SBattleLoad.LoadOpponentAssets which calls
ResourcesManager.LoadAssetGroupSync with the bot's
{rank, emblemId, degreeId, countryCode} — and our placeholder ids (1/1/1/"NONE")
don't resolve to any asset in the client's resource bundle, so the callback
never fires.

Replaced with the Scripted bot's known-good prod values:
- SleeveId: 704141010
- EmblemId: 400001100
- DegreeId: 120027
- FieldId: 5
- CountryCode: "JPN"
- IsOfficial: 0

These are the same ids ScriptedBotParticipant.Context uses, which we know
load fine because the TK2 Scripted flow has been working end-to-end since
Phase 2.

Reference for the load chain (decompiled client):
  BattleUI.WaitForSetUp → m_SBattleLoad.WaitCallBack
    → BattleStartControl.SetUp → CheckAbleToInitialize
    → SBattleLoad.LoadOpponentAssets (SBattleLoad.cs:933)
    → ResourcesManager.LoadAssetGroupSync — hangs on missing assets

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

SVSim.UnitTests/Matching/BotRosterTests.cs

@@ -34,7 +34,7 @@ public class BotRosterTests
         Assert.That(bot.ClassId, Is.InRange(1, 8));
         Assert.That(bot.CharaId, Is.InRange(1, 8));
         Assert.That(bot.UserName, Is.Not.Null.And.Not.Empty);
-        Assert.That(bot.CountryCode, Is.EqualTo("NONE"));
+        Assert.That(bot.CountryCode, Is.Not.Null.And.Not.Empty);
     }
 
     [Test]