refactor: Update getVar function in triggers.ts to handle null values

src/ts/process/triggers.ts

@@ -100,7 +100,7 @@ export async function runTrigger(char:character,mode:triggerMode, arg:{
     }
 
     function getVar(key:string){
-        return `${chat.scriptstate?.['$' + key]}`
+        return `${chat.scriptstate?.['$' + key] ?? "null"}`
     }
 
     function setVar(key:string, value:string){

src/ts/storage/database.ts

@@ -657,6 +657,7 @@ export interface Database{
     combineTranslation:boolean
     dynamicAssets:boolean
     dynamicAssetsEditDisplay:boolean
+    
 }
 
 export interface customscript{