refactor: clean up event methods

Signed-off-by: Sebastian <krupinski01@gmail.com>

src/components/MessageComposer.vue

@@ -26,7 +26,6 @@ const props = defineProps<Props>()
 // Emits
 const emit = defineEmits<{
   close: []
-  sent: []
 }>()
 
 const mailStore = useMailStore()
@@ -222,7 +221,6 @@ const handleSend = async () => {
         text: editor.value?.getText() || '',
       },
     })
-    emit('sent')
   } catch (error) {
     console.error('[Mail][Composer] Failed to send message:', error)
   }