fix: 'previous_chat_log' cbs (#801)

# PR Checklist
- [ ] Have you checked if it works normally in all models? *Ignore this
if it doesn't use models.*
- [ ] Have you checked if it works normally in all web, local, and node
hosted versions? If it doesn't, have you blocked it in those versions?
- [ ] Have you added type definitions?

# Description
It appears that the `previous_chat_log` cbs currently behaves
differently than described in the documentation.

Thank you for your time.

src/lib/Setting/Pages/Module/ModuleSettings.svelte

@@ -56,7 +56,7 @@
                         <button class={(DBState.db.enabledModules.includes(rmodule.id)) ?
                                 "mr-2 cursor-pointer text-blue-500" :
                                 rmodule.namespace && 
-                                DBState.db.moduleIntergration.split(',').map((s) => s.trim()).includes(rmodule.namespace) ?
+                                DBState.db.moduleIntergration?.split(',').map((s) => s.trim()).includes(rmodule.namespace) ?
                                 "text-amber-500 hover:text-green-500 mr-2 cursor-pointer" :
                                 "text-textcolor2 hover:text-green-500 mr-2 cursor-pointer"
                             } use:tooltip={language.enableGlobal} onclick={async (e) => {

src/ts/parser.svelte.ts

@@ -1379,7 +1379,7 @@ function basicMatcher (p1:string,matcherArg:matcherArg,vars:{[key:string]:string
                 case 'previous_chat_log':{
                     const selchar = db.characters[get(selectedCharID)]
                     const chat = selchar?.chats?.[selchar.chatPage]
-                    return chat?.message[chatID - 1]?.data ?? 'Out of range'
+                    return chat?.message[Number(arra[1])]?.data ?? 'Out of range'
     
                 }
                 case 'tonumber':{