fix: null check budget, cegah duplikasi approval/vote, tambah related_type di votes

app/Models/CashRecord.php

@@ -4,7 +4,6 @@ namespace App\Models;
 
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
-use App\Models\Activity;
 
 class CashRecord extends Model
 {

app/Models/Vote.php

@@ -10,7 +10,7 @@ class Vote extends Model
 {
     protected $fillable = [
         'title', 'description', 'type',
-        'related_id', 'status', 'deadline', 'created_by',
+        'related_id', 'related_type', 'status', 'deadline', 'created_by',
     ];
 
     protected $casts = [