Add `outcome` to comment autocompletion context

Release-Notes: skip
Change-Id: I300ba5a9baa7f8f05aa59f9496a47a9b43582da6
diff --git a/polygerrit-ui/app/utils/autocomplete-cache.ts b/polygerrit-ui/app/utils/autocomplete-cache.ts
index b1dba44..b880ccd 100644
--- a/polygerrit-ui/app/utils/autocomplete-cache.ts
+++ b/polygerrit-ui/app/utils/autocomplete-cache.ts
@@ -12,6 +12,7 @@
   isFullCommentPrediction?: boolean;
   draftInSyncWithSuggestionLength?: number;
   modelVersion?: string;
+  outcome?: number;
   requestDurationMs?: number;
 
   commentId?: string;