fix mismatch part_id in choice event + fix revert events on sector/participant removal

src/warchron/model/pairing.py

@@ -186,12 +186,13 @@ class Pairing:
         campaign = war.get_campaign_by_round(round.id)
         if campaign is None:
             raise DomainError("Campaign not found for round {round.id}")
+        war_participants = [
+            campaign.campaign_to_war_part_id(pid) for pid in participants
+        ]
         context = TieContext(
             context_type=ContextType.CHOICE,
             context_id=round.id,
-            participants=[
-                campaign.campaign_to_war_part_id(pid) for pid in participants
-            ],
+            participants=war_participants,
             score_value=score_value,
             score_kind=ScoreKind.VP,
             sector_id=sector_id,
@@ -212,6 +213,7 @@ class Pairing:
                 score_kind=context.score_kind,
                 sector_id=context.sector_id,
             )
+            # natural or unbreakable draw
             if not TieResolver.can_tie_be_resolved(
                 war, context, current_context.participants
             ):
@@ -220,7 +222,7 @@ class Pairing:
                         None,
                         context.context_type,
                         context.context_id,
-                        participants,
+                        participants=context.participants,
                         tie_id=tie_id,
                         score_value=score_value,
                         sector_id=sector_id,
@@ -254,7 +256,6 @@ class Pairing:
         for group in ranked_groups:
             shuffled_group = list(group)
             # TODO improve tie break with history parsing
-            # TODO avoid rematch
             random.shuffle(shuffled_group)
             ordered.extend(
                 campaign.war_to_campaign_part_id(pid) for pid in shuffled_group
@@ -266,6 +267,7 @@ class Pairing:
         round: Round,
         remaining: List[str],
     ) -> None:
+        # TODO avoid rematch
         for pid in list(remaining):
             available = round.get_battles_with_places()
             if not available: