Spawn default monsters with different levels according to data/Spawns.json...

Spawn default monsters with different levels according to data/Spawns.json when worldLevelOverride is not zero.

For example, in world with worldlevel 8, base monster level is 90 according to resources/ExcelBinOutput/WorldLevelExcelConfigData.json,
monster level bias in data/Spawns.json belongs to [1,32], so the monster level would belong to [69, 100].

src/main/java/emu/grasscutter/game/world/Scene.java

@@ -465,7 +465,11 @@ public class Scene {
 					continue;
 				}
 				
-				EntityMonster entity = new EntityMonster(this, data, entry.getPos(), worldLevelOverride > 0 ? worldLevelOverride : entry.getLevel());
+				int level = worldLevelOverride > 0 ? worldLevelOverride + entry.getLevel() - 22 : entry.getLevel();
+				level = level >= 100 ? 100 : level;
+				level = level <= 0 ? 1 : level;
+				
+				EntityMonster entity = new EntityMonster(this, data, entry.getPos(), level);
 				entity.getRotation().set(entry.getRot());
 				entity.setGroupId(entry.getGroup().getGroupId());
 				entity.setPoseId(entry.getPoseId());