handle giveKeyChainTriggeredMessage with ChainStage = -1

e.g. for railjack build quest, the initial inbox message is sent like this. no 'm' needs to be set to true for it.

src/services/questService.ts

@@ -86,10 +86,7 @@ export const updateQuestStage = (
     if (ChainStage >= 0) {
         const questStage = quest.Progress[ChainStage]; // guaranteed in-bounds now
 
-        for (const [key, value] of Object.entries(questStageUpdate) as [
+        for (const [key, value] of Object.entries(questStageUpdate) as [keyof IQuestStage, number | boolean | any[]][]) {
-            keyof IQuestStage,
-            number | boolean | any[]
-        ][]) {
             (questStage[key] as any) = value;
         }
     }