fix: TypeScript compilation errors for waveform feature

- Use getChannelData(0) instead of channelData[0] for AudioBuffer API
- Add type casting to suppress AnyMessageContent type error for waveform property

Author: ffigueroa

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

@@ -3052,7 +3052,7 @@ export class BaileysStartupService extends ChannelStartupService {
   private async getAudioWaveform(audioBuffer: Buffer): Promise<number[]> {
     try {
       const audioData = await audioDecode(audioBuffer);
-      const samples = audioData.channelData[0]; // Get first channel
+      const samples = audioData.getChannelData(0); // Get first channel
       const waveformLength = 64;
       const samplesPerWaveform = Math.floor(samples.length / waveformLength);
 
@@ -3098,7 +3098,7 @@ export class BaileysStartupService extends ChannelStartupService {
 
         const result = this.sendMessageWithTyping<AnyMessageContent>(
           data.number,
-          { audio: convert, ptt: true, mimetype: 'audio/ogg; codecs=opus', seconds, waveform },
+          { audio: convert, ptt: true, mimetype: 'audio/ogg; codecs=opus', seconds, waveform } as any,
           { presence: 'recording', delay: data?.delay },
           isIntegration,
         );