fix: don’t render empty parenthesis for calendar slots with playlists

src/Pages/Calendar.vue

@@ -180,7 +180,7 @@ const calendarEvents = computedAsync(async () => {
     }
 
     const isEmpty = timeslot.playlistId === null
-    const emptyText = isEmpty ? t('calendar.empty') : ''
+    const emptyText = isEmpty ? ` ${t('calendar.empty')}` : ''
     const durationMinutes =
       (ensureDate(timeslot.end).getTime() - ensureDate(timeslot.start).getTime()) / 1000 / 60
     const show = await showStore.retrieve(timeslot.showId, { useCached: true })
@@ -189,7 +189,7 @@ const calendarEvents = computedAsync(async () => {
     const className = ['calendar-event', isOwner ? 'is-mine' : 'is-not-mine']
     if (durationMinutes < 0) className.push('is-invalid')
 
-    const title = sanitizeHTML(show?.name ?? '') + ` (${emptyText})`
+    const title = sanitizeHTML(show?.name ?? '') + emptyText
     const slot = {
       id: timeslot.id,
       start: timeslot.start,