Allow only Editors and Administrators to lock / unlock blocks

Block Locking Filter.php

<?php

\add_filter('block_editor_settings_all', static function (array $settings): array {
    $currentUserRoles = \wp_get_current_user()->roles;
    $allowedUserRoles = ['editor', 'administrator'];
    $isUserAllowed = (bool)\array_intersect($currentUserRoles, $allowedUserRoles);

    if (!$isUserAllowed) {
        $settings['canLockBlocks'] = false;
    }

    return $settings;
});