WebP in AJAX search

Hello,
Sińce im uploading a lot of images, I’ve decided to go with WebP format to increase site performance.

I’ve added following to functions:

<?php
/**
 * Enqueue script and styles for child theme
 */
function woodmart_child_enqueue_styles() {
    wp_enqueue_style( 'child-style', get_stylesheet_directory_uri() . '/style.css', array( 'woodmart-style' ), woodmart_get_theme_info( 'Version' ) );
}
add_action( 'wp_enqueue_scripts', 'woodmart_child_enqueue_styles', 10010 );
//** *Enable upload for webp image files.*/
function webp_upload_mimes($existing_mimes) {
    $existing_mimes['webp'] = 'image/webp';
    return $existing_mimes;
}
add_filter('mime_types', 'webp_upload_mimes');
//** * Enable preview / thumbnail for webp image files.*/
function webp_is_displayable($result, $path) {
    if ($result === false) {
        $displayable_image_types = array( IMAGETYPE_WEBP );
        $info = @getimagesize( $path );

        if (empty($info)) {
            $result = false;
        } elseif (!in_array($info[2], $displayable_image_types)) {
            $result = false;
        } else {
            $result = true;
        }
    }

    return $result;
}
add_filter('file_is_displayable_image', 'webp_is_displayable', 10, 2);

And it’s working fine by now, the only issue is that main product thumbnail is not displayed in Ajax search result – it only shows jpg format.

Is there any way to add action to display WebP thumbnail in Ajax search ?