wms-menu/partials/menu/secondary/_sidenav.phtml

<?php
    $mainMenuCode = 'main';
    $sideMainMenuItems = BackendMenu::listSideMenuItems();
    if (!isset($context)) {
        $context = BackendMenu::getContext();
    }
?>
<?php if ($sideMainMenuItems): ?>
    <div class="layout-cell layout-sidenav-container wms-menu">
        <div class="layout-relative">
            <nav
                id="layout-sidenav"
                class="layout-sidenav bg-p"
                data-active-class="active"
                data-control="sidenav">
                <ul class="nav">
                    <?php foreach ($sideMainMenuItems as $sideItemCode => $item): ?>
                        <li
                            class="<?= $context->mainMenuCode == $sideItemCode ? 'active' : null ?>"
                            <?= Html::attributes($item->attributes) ?>
                        >
                            <a href="<?= $item->url ?>">
                                <span class="nav-icon">
                                    <?php if ($item->iconSvg): ?>
                                        <img class="svg-icon" src="<?= Url::asset($item->iconSvg) ?>">
                                    <?php endif ?>

                                    <i class="<?= $item->iconSvg ? 'svg-replace' : null ?> <?= $item->icon ?>"></i>
                                </span>
                                <span class="nav-label">
                                    <?= e(trans($item->label)) ?>
                                </span>
                            </a>
                            <span
                                class="counter <?= $item->counter === null ? 'empty' : null ?>"
                                data-menu-id="<?= e($mainMenuCode.'/'.$sideItemCode) ?>"
                                <?php if ($item->counterLabel): ?>title="<?= e(trans($item->counterLabel)) ?>"<?php endif ?>
                                >
                                <?= e($item->counter) ?>
                            </span>
                        </li>
                    <?php endforeach ?>
                </ul>
            </nav>
        </div>
    </div>
<?php endif ?>
<div class="layout-cell sidenav-tree bg-p" data-control="sidenav-tree" data-search-input="#settings-search-input">
    <a class="back-link" href="<?= Backend::url('wms/menu' . (empty($context->sideMenuCode) ? '' : "/{$context->mainMenuCode}")) ?>">
        <i class="icon-angle-left"></i><?= e(trans($context->mainMenuCode == $mainMenuCode || empty($context->sideMenuCode)
            ? 'wms.menu::plugin.name'
            : "wms.site::lang.{$context->mainMenuCode}.title"
        )) ?>
    </a>
    <div class="layout">
        <a class="back-link wms-menu-back-link" href="<?= Backend::url('wms/menu' . (empty($context->sideMenuCode) ? '' : "/{$context->mainMenuCode}")) ?>">
            <i class="icon-angle-left"></i><?= e(trans($context->mainMenuCode == $mainMenuCode || empty($context->sideMenuCode)
                ? 'wms.menu::plugin.name'
                : "wms.site::lang.{$context->mainMenuCode}.title"
            )) ?>
        </a>
        <div class="layout-row min-size">
            <?= $this->makePartial(__DIR__ . '/../main/_system_sidebar_menu_toolbar.phtml'); ?>
        </div>

        <div class="layout-row">
            <div class="layout-cell">
                <div class="layout-relative">

                    <div class="layout-absolute">
                        <div class="control-scrollbar" data-control="scrollbar">
                            <?= $this->makePartial(__DIR__ . '/_sidenav_sidebar_menu.phtml', [
                                'context' => $context,
                            ]) ?>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>