Realm of Legends Hard and Impossible Difficulties Enemies Aren't Using Commander Decks

**Describe the bug**
In the realm of legends new save files on the hard and impossible difficulty. Enemies, both dungeon and overworld do not have singleton decks, do not have a commander, and seem to have randomly generated decks of some form or another. On normal difficulty everything works as expected.

**To Reproduce**
Steps to reproduce the behavior:
1. Go to Realm of Legends
2. Start a new game, select hard difficulty
3. Leave the starter library
4. Encounter an overworld enemy

**Expected behavior**
A return to functionality from previously, where enemies would use commander decks in realm of legends.

**Smartphone (please complete the following information):**
- Device: Google Pixel 10
- OS: Android 17
- Version: Forge 2.0.15-SNAPSHOT-08.18

Start by reproducing the issue in Realm of Legends with a new save on hard and impossible difficulty, following the listed steps, and compare enemy decks with normal difficulty. Trace the Realm of Legends enemy generation path to determine why dungeon and overworld enemies lack singleton decks and commanders. Done means new hard and impossible games use commander decks as expected.

Written by the indexing model from the issue text.