Fix welcome page freezing

src/lib/ChatScreens/Chat.svelte

@@ -93,12 +93,20 @@
     }
 
     function getCbsCondition(){
+        try{
             const cbsConditions:CbsConditions = {
                 firstmsg: firstMessage ?? false,
                 chatRole: DBState.db.characters[$selectedCharID].chats[DBState.db.characters[$selectedCharID].chatPage]?.message?.[idx]?.role ?? null,
             }
             return cbsConditions
         }
+        catch(e){
+            return {
+                firstmsg: firstMessage ?? false,
+                chatRole: null,
+            }
+        }
+    }
 
     function displaya(message:string){
         msgDisplay = risuChatParser(message, {chara: name, chatID: idx, rmVar: true, visualize: true, cbsConditions: getCbsCondition()})