Fix event package display and add missing translations

- Correct Event->eventPackage relationship to HasOne
- Add missing translations for event packages and table columns

app/Models/Event.php

@@ -95,9 +95,9 @@ class Event extends Model
             ->withTimestamps();
     }
 
-    public function eventPackage(): BelongsTo
+    public function eventPackage(): HasOne
     {
-        return $this->belongsTo(EventPackage::class);
+        return $this->hasOne(EventPackage::class)->latestOfMany();
     }
 
     public function eventPackages(): HasMany