fix: File validations for Twilio WhatsApp Channel (#5294)

Fixes: #5289 #2971

- Removed unsupported attachment file format from Twilio WhatsApp Channel. https://www.twilio.com/docs/whatsapp/guidance-whatsapp-media-messages

- Added 5 MB attachment file limit for Twilio SMS Channel.

app/javascript/dashboard/components/widgets/WootWriter/ReplyBottomPanel.vue

@@ -136,7 +136,10 @@ import eventListenerMixins from 'shared/mixins/eventListenerMixins';
 import uiSettingsMixin from 'dashboard/mixins/uiSettings';
 import inboxMixin from 'shared/mixins/inboxMixin';
 
-import { ALLOWED_FILE_TYPES } from 'shared/constants/messages';
+import {
+  ALLOWED_FILE_TYPES,
+  ALLOWED_FILE_TYPES_FOR_TWILIO_WHATSAPP,
+} from 'shared/constants/messages';
 
 import { REPLY_EDITOR_MODES } from './constants';
 export default {
@@ -257,6 +260,9 @@ export default {
       return this.showAudioRecorder && this.isRecordingAudio;
     },
     allowedFileTypes() {
+      if (this.isATwilioWhatsappChannel) {
+        return ALLOWED_FILE_TYPES_FOR_TWILIO_WHATSAPP;
+      }
       return ALLOWED_FILE_TYPES;
     },
     audioRecorderPlayStopIcon() {