Fix: Mejorar manejo de duracion de audio y errores de envio

- Validar que duration sea numero finito en MessageAudio
- Obtener duracion del elemento audio si no esta en metadata
- Agregar toast de error para envio de notas de voz

app/components/messages/content/MessageAudio.vue

@@ -104,7 +104,12 @@ const isPlaying = ref(false)
 const loading = ref(true)
 const error = ref(false)
 const currentTime = ref(0)
-const duration = ref(props.media.duration || 0)
+// Ensure duration is a valid number
+const duration = ref(
+  typeof props.media.duration === 'number' && isFinite(props.media.duration) && props.media.duration > 0
+    ? props.media.duration
+    : 0
+)
 
 const audioUrl = computed(() => {
   if (props.media.url) return props.media.url
@@ -155,8 +160,12 @@ const seekTo = (e: MouseEvent) => {
 
 const onLoadedMetadata = () => {
   loading.value = false
-  if (audioRef.value && !props.media.duration) {
-    duration.value = audioRef.value.duration
+  // Always try to get duration from audio element if we don't have a valid one
+  if (audioRef.value) {
+    const audioDuration = audioRef.value.duration
+    if (isFinite(audioDuration) && audioDuration > 0 && duration.value === 0) {
+      duration.value = audioDuration
+    }
   }
 }