DB: Added views->viewable_type index

For #5948

database/migrations/2025_12_19_103417_add_views_viewable_type_index.php

@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('views', function (Blueprint $table) {
+            $table->index('viewable_type', 'views_viewable_type_index');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('views', function (Blueprint $table) {
+            $table->dropIndex('views_viewable_type_index');
+        });
+    }
+};