Incorrect redirect_url

Hi,

We found an issue with non-Latin URLs (for example Hebrew slugs) in the plugin output.

The plugin currently generates:

var request_uri = '<?php echo esc_attr( sanitize_text_field( $_SERVER['REQUEST_URI'] ) ); ?>';

Because sanitize_text_field() is used on $_SERVER['REQUEST_URI'], Unicode characters in the URL path are replaced with dashes. For example:

/blog/באיזה-שלב-כדאי-לעשות-poc-עם-חברה

becomes:

/blog/----poc----/

This malformed URL is then exposed in inline JavaScript, and Google Search Console detects it as a broken internal URL (404).

Suggested fix:

var request_uri = <?php echo wp_json_encode( wp_unslash( $_SERVER['REQUEST_URI'] ?? '' ) ); ?>;

This preserves the original encoded UTF-8 URL safely for JavaScript usage.