Fixes monster_ai battle config (#6757)

* Fixes #6751.
* Expands the cap of the monster_ai config to support new settings.
Thanks to @xZee0523!

src/map/battle.cpp

@@ -9836,7 +9836,7 @@ static const struct _battle_data {
 	{ "display_hallucination",              &battle_config.display_hallucination,           1,      0,      1,              },
 	{ "use_statpoint_table",                &battle_config.use_statpoint_table,             1,      0,      1,              },
 	{ "debuff_on_logout",                   &battle_config.debuff_on_logout,                0,      0,      1|2,            },
-	{ "monster_ai",                         &battle_config.mob_ai,                          0x000,  0x000,  0x77F,          },
+	{ "monster_ai",                         &battle_config.mob_ai,                          0x000,  0x000,  0xFFF,          },
 	{ "hom_setting",                        &battle_config.hom_setting,                     0xFFFF, 0x0000, 0xFFFF,         },
 	{ "dynamic_mobs",                       &battle_config.dynamic_mobs,                    1,      0,      1,              },
 	{ "mob_remove_damaged",                 &battle_config.mob_remove_damaged,              1,      0,      1,              },