Consolidate indexes in create_model_states_table migration for improved query performance

Author: nthndnn

database/migrations/create_model_states_table.php.stub

@@ -26,8 +26,8 @@ return new class extends Migration
             }
 
             $table->timestamps();
-            $table->index(['model_type', 'model_id', 'field']);
-            $table->index(['created_at']);
+            
+            $table->index(['model_type', 'model_id', 'field', 'created_at']);
         });
     }