Refactor product relations to use new category_product and channel_product tables

- Updated queries and relationships in various controllers and models to replace `product_has_relations` with `category_product` and `channel_product`.
- Adjusted methods in `ProductFilterer`, `FilterParamsController`, and `FilterController` to reflect the new database structure.
- Modified seeder to insert data into the new `channel_product` table.
- Updated tests to ensure compatibility with the new product relation structure.

app/Models/Ecommerce/Channel/Channel.php

@@ -11,6 +11,7 @@ use App\Repositories\System\Cache\CacheRepository;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Database\Eloquent\Relations\MorphTo;
 use Illuminate\Database\Eloquent\Relations\MorphToMany;
@@ -179,9 +180,9 @@ class Channel extends Model implements HasMedia, Sortable
     /**
      * Products
      */
-    public function products(): MorphToMany
+    public function products(): BelongsToMany
     {
-        return $this->morphToMany(Product::class, 'productable', 'product_has_relations');
+        return $this->belongsToMany(Product::class, 'channel_product');
     }
 
     /**

app/Models/Ecommerce/Product/Category/Category.php

@@ -152,9 +152,9 @@ class Category extends Model implements HasMedia, Sortable
     /**
      * Category Products
      */
-    public function products(): MorphToMany
+    public function products(): BelongsToMany
     {
-        return $this->morphToMany(Product::class, 'productable', 'product_has_relations');
+        return $this->belongsToMany(Product::class, 'category_product');
     }
 
     /**

app/Models/Ecommerce/Product/Collection/Collection.php

@@ -5,6 +5,7 @@ namespace App\Models\Ecommerce\Product\Collection;
 use App\Models\Ecommerce\Product\Product\Product;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Database\Eloquent\Relations\MorphToMany;
 use Spatie\EloquentSortable\Sortable;
 use Spatie\EloquentSortable\SortableTrait;
@@ -109,9 +110,9 @@ class Collection extends Model implements HasMedia, Sortable
     /**
      * Products
      */
-    public function products(): MorphToMany
+    public function products(): BelongsToMany
     {
-        return $this->morphToMany(Product::class, 'productable', 'product_has_relations');
+        return $this->belongsToMany(Product::class, 'collection_product');
     }
 
     /**

app/Models/Ecommerce/Product/Product/Concerns/ProductRelationships.php

@@ -38,9 +38,9 @@ trait ProductRelationships
     /**
      * Related Channels
      */
-    public function channels(): MorphToMany
+    public function channels(): BelongsToMany
     {
-        return $this->morphedByMany(Channel::class, 'productable', 'product_has_relations');
+        return $this->belongsToMany(Channel::class, 'channel_product');
     }
 
     /**
@@ -56,25 +56,25 @@ trait ProductRelationships
     /**
      * Related products (similar)
      */
-    public function relatedProducts(): MorphToMany
+    public function relatedProducts(): BelongsToMany
     {
-        return $this->morphedByMany(Product::class, 'productable', 'product_has_relations');
+        return $this->belongsToMany(Product::class, 'product_related', 'product_id', 'related_product_id');
     }
 
     /**
      * Related categories
      */
-    public function categories(): MorphToMany
+    public function categories(): BelongsToMany
     {
-        return $this->morphedByMany(Category::class, 'productable', 'product_has_relations');
+        return $this->belongsToMany(Category::class, 'category_product');
     }
 
     /**
      * Related Collections
      */
-    public function collections(): MorphToMany
+    public function collections(): BelongsToMany
     {
-        return $this->morphedByMany(Collection::class, 'productable', 'product_has_relations');
+        return $this->belongsToMany(Collection::class, 'collection_product');
     }
 
     /**