Fix PvN battle start with fainted parties

common/src/main/kotlin/com/cobblemon/mod/common/battles/BattleBuilder.kt

@@ -349,11 +349,12 @@ object BattleBuilder {
             npcPartyStores.add(npcParty)
         }
 
-        if (playerActor.pokemonList.size < battleFormat.battleType.slotsPerActor) {
+        val playerAvailablePokemon = playerActor.pokemonList.count { it.health > 0 }
+        if (playerAvailablePokemon < battleFormat.battleType.slotsPerActor) {
             errors.participantErrors[playerActor] += BattleStartError.insufficientPokemon(
                 actorEntity = player,
                 requiredCount = battleFormat.battleType.slotsPerActor,
-                hadCount = playerActor.pokemonList.size
+                hadCount = playerAvailablePokemon
             )
         }
 

common/src/main/kotlin/com/cobblemon/mod/common/battles/ai/strongBattleAI/ActiveTracker.kt

@@ -163,7 +163,8 @@ class TrackerActor(val uuid: UUID) {
             //we assume that AI knows it all about our allies
             trackerActor.party.addAll(actor.pokemonList.map { createAllied(it) })
             actor.activePokemon.forEach {
-                val active = trackerActor.party.first { trackMon -> trackMon.id == it.battlePokemon!!.uuid }
+                val battlePokemon = it.battlePokemon ?: return@forEach
+                val active = trackerActor.party.first { trackMon -> trackMon.id == battlePokemon.uuid }
                 trackerActor.party.remove(active)
                 trackerActor.activePokemon.add(active)
             }
@@ -176,7 +177,8 @@ class TrackerActor(val uuid: UUID) {
             //only know basics of what we see right now
             trackerActor.party.addAll(actor.pokemonList.map { createOpposing(it) })
             actor.activePokemon.forEach {
-                val active = trackerActor.party.first { trackMon -> trackMon.id == it.battlePokemon!!.uuid }
+                val battlePokemon = it.battlePokemon ?: return@forEach
+                val active = trackerActor.party.first { trackMon -> trackMon.id == battlePokemon.uuid }
                 trackerActor.party.remove(active)
                 trackerActor.activePokemon.add(active)
             }