fix(chatwoot): improve jid normalization and type safety in chatwoot integration

Refactor  to preserve LID identifiers and update  parameter type for better type safety as per code review feedback.

src/api/integrations/channel/whatsapp/whatsapp.baileys.service.ts

@@ -1609,7 +1609,7 @@ export class BaileysStartupService extends ChannelStartupService {
       // This enables LID to phoneNumber conversion without breaking existing webhook consumers
 
       // Helper to normalize participantId as phone number
-      const normalizePhoneNumber = (id: string | any): string => {
+      const normalizePhoneNumber = (id: string | null | undefined): string => {
         // Remove @lid, @s.whatsapp.net suffixes and extract just the number part
         return String(id || '').split('@')[0];
       };

src/api/integrations/chatbot/chatwoot/services/chatwoot.service.ts

@@ -2527,7 +2527,7 @@ export class ChatwootService {
     }
   }
 
-  public getNumberFromRemoteJid(remoteJid: string) {
+  public normalizeJidIdentifier(remoteJid: string) {
     if (!remoteJid) {
       return '';
     }