fix: change num_code validation to maxLength(3) (EC-213)

Author: KilianTrunk

src/Filament/Clusters/World/Resources/CountryResource.php

@@ -74,7 +74,7 @@ public static function form(Schema $schema): Schema
 
                 TextInput::make('num_code')
                     ->numeric()
-                    ->length(3)
+                    ->maxLength(3)
                     ->label(__('eclipse-world::countries.form.num_code.label'))
                     ->helperText(__('eclipse-world::countries.form.num_code.helper')),