Update @form.latte

app/Core/Widget/@form.latte

@@ -1,8 +1,8 @@
-{var string $class = ''}
+{varType string $class}
 {varType string $name}
 {varType Nette\Application\UI\Form $form}
 
-<form n:name="$name" n:class="'row g-3', $class" data-naja-history="off">
+<form n:name="$name" n:class="'row g-3', $class ?? null" data-naja-history="off">
 	<ul class="errors" n:ifcontent>
 		<li n:foreach="$form->getOwnErrors() as $error">{_$error}</li>
 	</ul>
@@ -12,20 +12,14 @@
 </form>
 
 {* General form field definition (input, select, textarea, submit) using switch *}
-{define input, string $type, string $name, int $columns = 12, string $class = '', int $rows = 3}
+{define input, string $type, string $name, int $columns = 12, string $class, int $rows = 3}
 	<div class="col-md-{$columns}">
-
-		{* Bootstrap classes for form elements *}
-		{var $text = 'form-control'}
-		{var $select = 'form-select'}
-		{var $submit = 'btn btn-primary'}
-
 		{label $name, class: 'form-label' /}
 		{switch $type}
-			{case 'text'}{input $name, class: $class ? "$text $class" : $text}
-			{case 'select'}{input $name, class: $class ? "$select $class" : $select}
-			{case 'textarea'}{input $name, class: $class ? "$text $class" : $text, rows: $rows}
-			{case 'submit'}{input $name, class: $class ? "$submit $class" : $submit}
+			{case 'text'}<input n:name="$name" n:class="'form-control', $class">
+			{case 'select'}<select n:name="$name" n:class="'form-select', $class"></select>
+			{case 'textarea'}<textarea n:name="$name" n:class="'form-control', $class" rows="{$rows}"></textarea>
+			{case 'submit'}<input n:name="$name" n:class="'btn btn-primary'>
 		{/switch}
 	</div>
 {/define}