Porting fix for #585 from v2 (#622)

Author: 2ndkauboy

src/Handlers/Comment.php

@@ -56,7 +56,7 @@ public static function process( array $comment ): array {
 
 		$comment['comment_author_IP'] = IpHelper::get_client_ip();
 
-		$request_uri  = isset( $_SERVER['REQUEST_URI'] ) ? esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ) ) : null;
+		$request_uri  = isset( $_SERVER['SCRIPT_NAME'] ) ? esc_url_raw( wp_unslash( $_SERVER['SCRIPT_NAME'] ) ) : null;
 		$request_path = DataHelper::parse_url( $request_uri, 'path' );
 
 		if ( empty( $request_path ) ) {